scripts/cpa.sh -heap 3000M -noout -disable-java-assertions -predicateAnalysis-PredAbsRefiner-ABEl -setprop cpa.predicate.handlePointerAliasing=false -64 -timelimit 900s -stats -spec test/programs/benchmarks/ldv-linux-3.4-simple/ALL.prp test/programs/benchmarks/ldv-linux-3.4-simple/32_1_cilled_true-unreach-call_ok_nondet_linux-3.4-32_1-drivers--staging--speakup--speakup_soft.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.c -------------------------------------------------------------------------------- Running CPAchecker with Java heap of size 3000M. Using the following resource limits: CPU-time limit of 900s (ResourceLimitChecker.fromConfiguration, INFO) CPAchecker 1.4-svn (OpenJDK 64-Bit Server VM 1.7.0_65) started (CPAchecker.run, INFO) line 3947: Dead code detected: Goto: case_1 (CFACreationUtils.addEdgeToCFA, INFO) line 3952: Dead code detected: Goto: case_2 (CFACreationUtils.addEdgeToCFA, INFO) line 3957: Dead code detected: Goto: case_4 (CFACreationUtils.addEdgeToCFA, INFO) line 3966: Dead code detected: Goto: switch_default (CFACreationUtils.addEdgeToCFA, INFO) Dead code detected: Label case_2 is not reachable. (CFAFunctionBuilder.leave, INFO) Dead code detected: Label case_1 is not reachable. (CFAFunctionBuilder.leave, INFO) Dead code detected: Label switch_default is not reachable. (CFAFunctionBuilder.leave, INFO) Dead code detected: Label case_4 is not reachable. (CFAFunctionBuilder.leave, INFO) Inline assembler ignored, analysis is probably unsound! (CFABuilder.createCFA, WARNING) line 4167: Function pointer *__cil_tmp4 with type void (*)(struct file *, wait_queue_head_t *, struct poll_table_struct *) is called, but no possible target functions were found. (CFunctionPointerResolver.replaceFunctionPointerCall, WARNING) Handling of pointer aliasing is disabled, analysis is unsound if aliased pointers exist. (PredicateCPA:PathFormulaManagerImpl., WARNING) Using predicate analysis with SMTInterpol 2.1-174-ga199d47-comp and JFactory 1.21. (PredicateCPA:PredicateCPA., INFO) Using refinement for predicate analysis with PredicateAbstractionRefinementStrategy strategy. (PredicateCPA:PredicateCPARefiner., INFO) The following configuration options were specified but are not used: cpa.predicate.memoryAllocationsAlwaysSucceed cpa.predicate.maxPreFilledAllocationSize (CPAchecker.printConfigurationWarnings, WARNING) Starting analysis ... (CPAchecker.runAlgorithm, INFO) Assuming external function ldv_initialize to be a constant function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function synth_add to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) line 4167: Ignoring call via function pointer poll_wait::__cil_tmp4 for which no suitable target was found in line: (*__cil_tmp4)(filp, wait_address, p); (FunctionPointerCPA:FunctionPointerTransferRelation.getAbstractSuccessorsForEdge, WARNING) line 4167: Ignoring function call through function pointer *__cil_tmp4: (*__cil_tmp4)(filp, wait_address, p); (PredicateCPA:ExpressionToFormulaVisitor.visit, WARNING) Assuming external function _raw_spin_lock_irqsave to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function synth_buffer_empty to be a constant function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function _raw_spin_unlock_irqrestore to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Program contains array, or pointer (multiple level of indirection), or field (enable handleFieldAccess and handleFieldAliasing) access; analysis is imprecise in case of aliasing. (PredicateCPA:CtoFormulaConverter.makeVariableUnsafe, WARNING) Assuming external function speakup_start_ttys to be a constant function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function kstrtoul_from_user to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function ldv_check_return_value to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function prepare_to_wait to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function finish_wait to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function schedule to be a constant function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function memset to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function synth_buffer_getc to be a constant function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function __might_sleep to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function _copy_to_user to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function misc_deregister to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function misc_register to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function synth_remove to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Stopping analysis ... (CPAchecker.runAlgorithm, INFO) PredicateCPA statistics ----------------------- Number of abstractions: 17 (1% of all post computations) Times abstraction was reused: 0 Because of function entry/exit: 0 (0%) Because of loop head: 17 (100%) Because of join nodes: 0 (0%) Because of threshold: 0 (0%) Times precision was empty: 7 (41%) Times precision was {false}: 0 (0%) Times result was cached: 0 (0%) Times cartesian abs was used: 0 (0%) Times boolean abs was used: 10 (59%) Times result was 'false': 1 (6%) Number of strengthen sat checks: 6 Times result was 'false': 5 (83%) Number of coverage checks: 168 BDD entailment checks: 8 Number of SMT sat checks: 6 trivial: 0 cached: 1 Max ABE block size: 37 Number of predicates discovered: 2 Number of abstraction locations: 0 Max number of predicates per location: 0 Avg number of predicates per location: 0 Total predicates per abstraction: 20 Max number of predicates per abstraction: 2 Avg number of predicates per abstraction: 2.00 Number of irrelevant predicates: 0 (0%) Number of preds handled by boolean abs: 20 (100%) Total number of models for allsat: 9 Max number of models for allsat: 1 Avg number of models for allsat: 0.90 Number of path formula cache hits: 604 (50%) Time for post operator: 0.099s Time for path formula creation: 0.088s Actual computation: 0.080s Time for strengthen operator: 0.053s Time for satisfiability checks: 0.048s Time for prec operator: 0.279s Time for abstraction: 0.278s (Max: 0.092s, Count: 17) Boolean abstraction: 0.075s Solving time: 0.051s (Max: 0.019s) Model enumeration time: 0.019s Time for BDD construction: 0.000s (Max: 0.000s) Time for merge operator: 0.069s Time for coverage check: 0.001s Time for BDD entailment checks: 0.001s Total time for SMT solver (w/o itp): 0.117s Number of BDD nodes: 203 Size of BDD node table: 10007 Size of BDD node cleanup queue: 0 (count: 62, min: 0, max: 0, avg: 0,00) Time for BDD node cleanup: 0.000s Time for BDD garbage collection: 0.000s (in 0 runs) PrecisionBootstrap statistics ----------------------------- Init. function predicates: 0 Init. global predicates: 0 Init. location predicates: 0 AutomatonAnalysis (SVCOMP) statistics ------------------------------------- Number of states: 1 Total time for successor computation: 0.059s Automaton transfers with branching: 0 Automaton transfer successors: 3342 (count: 3342, min: 1, max: 1, avg: 1,00) [1 x 3342] CPA algorithm statistics ------------------------ Number of iterations: 1049 Max size of waitlist: 15 Average size of waitlist: 11 Number of computed successors: 1145 Max successors for one state: 2 Number of times merged: 80 Number of times stopped: 88 Number of times breaked: 1 Total time for CPA algorithm: 0.743s (Max: 0.425s) Time for choose from waitlist: 0.009s Time for precision adjustment: 0.299s Time for transfer relation: 0.290s Time for merge operator: 0.082s Time for stop operator: 0.007s Time for adding to reached set: 0.024s Predicate-Abstraction Refiner statistics ---------------------------------------- Avg. length of target path (in blocks): 3 (count: 1, min: 3, max: 3, avg: 3,00) Time for refinement: 0.023s Counterexample analysis: 0.014s (Max: 0.014s, Calls: 1) Refinement sat check: 0.013s Interpolant computation: 0.000s Error path post-processing: 0.000s Path-formulas extraction: 0.000s Building the counterexample trace: 0.014s Extracting precise counterexample: 0.000s Predicate creation: 0.000s Precision update: 0.000s ARG update: 0.000s Length of refined path (in blocks): 0 (count: 0, min: 0, max: 0, avg: 0,00) Number of affected states: 0 (count: 0, min: 0, max: 0, avg: 0,00) Length (states) of path with itp 'true': 0 (count: 0, min: 0, max: 0, avg: 0,00) Length (states) of path with itp non-trivial itp: 0 (count: 0, min: 0, max: 0, avg: 0,00) Length (states) of path with itp 'false': 0 (count: 0, min: 0, max: 0, avg: 0,00) Different non-trivial interpolants along paths: 0 (count: 0, min: 0, max: 0, avg: 0,00) Equal non-trivial interpolants along paths: 0 (count: 0, min: 0, max: 0, avg: 0,00) Different precisions along paths: 0 (count: 0, min: 0, max: 0, avg: 0,00) Equal precisions along paths: 0 (count: 0, min: 0, max: 0, avg: 0,00) Number of refs with location-based cutoff: 0 CEGAR algorithm statistics -------------------------- Number of refinements: 1 Number of successful refinements: 1 Number of failed refinements: 0 Max. size of reached set before ref.: 516 Max. size of reached set after ref.: 1 Avg. size of reached set before ref.: 516.00 Avg. size of reached set after ref.: 1.00 Total time for CEGAR algorithm: 0.768s Time for refinements: 0.025s Average time for refinement: 0.025s Max time for refinement: 0.025s Counterexample-Check Algorithm statistics ----------------------------------------- Number of counterexample checks: 0 CPAchecker general statistics ----------------------------- Number of program locations: 486 Number of functions: 34 Number of loops: 4 Size of reached set: 543 Number of reached locations: 416 (86%) Avg states per location: 1 Max states per location: 7 (at node N93) Number of reached functions: 26 (76%) Number of partitions: 543 Avg size of partitions: 1 Max size of partitions: 1 Number of target states: 0 Time for analysis setup: 2.181s Time for loading CPAs: 0.441s Time for loading parser: 0.404s Time for CFA construction: 1.300s Time for parsing file(s): 0.597s Time for AST to CFA: 0.434s Time for CFA sanity check: 0.000s Time for post-processing: 0.128s Time for var class.: 0.000s Time for Analysis: 0.770s CPU time for analysis: 0.770s Total time for CPAchecker: 2.951s Total CPU time for CPAchecker: 2.940s Time for Garbage Collector: 0.064s (in 1 runs) Garbage Collector(s) used: PS MarkSweep, PS Scavenge Used heap memory: 127MB ( 121 MiB) max; 62MB ( 59 MiB) avg; 151MB ( 144 MiB) peak Used non-heap memory: 21MB ( 20 MiB) max; 15MB ( 14 MiB) avg; 21MB ( 20 MiB) peak Used in PS Old Gen pool: 0MB ( 0 MiB) max; 0MB ( 0 MiB) avg; 0MB ( 0 MiB) peak Allocated heap memory: 504MB ( 481 MiB) max; 504MB ( 481 MiB) avg Allocated non-heap memory: 24MB ( 23 MiB) max; 24MB ( 23 MiB) avg Total process virtual memory: 4899MB ( 4672 MiB) max; 4899MB ( 4672 MiB) avg Verification result: TRUE. No property violation found by chosen configuration. More details about the verification run can be found in the directory "./output".