scripts/cpa.sh -heap 50000M -noout -disable-java-assertions -predicateAnalysis-PredAbsRefiner-ABEl -setprop cpa.predicate.handlePointerAliasing=false -64 -timelimit 900s -stats -spec test/programs/benchmarks/ldv-linux-3.0/ALL.prp test/programs/benchmarks/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko_true-unreach-call.cil.out.i.pp.i -------------------------------------------------------------------------------- Running CPAchecker with Java heap of size 50000M. 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 6407: Dead code detected: Goto: while_break (CFACreationUtils.addEdgeToCFA, INFO) Dead code detected: Label while_break is not reachable. (CFAFunctionBuilder.leave, INFO) line 6492: Dead code detected: Goto: while_break (CFACreationUtils.addEdgeToCFA, INFO) Dead code detected: Label while_break is not reachable. (CFAFunctionBuilder.leave, INFO) 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 usb_serial_register to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function usb_register_driver to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function usb_serial_deregister to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function tty_port_tty_get to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function tty_flip_buffer_push to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function tty_kref_put 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 _raw_spin_lock_irqsave to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function _raw_spin_unlock_irqrestore to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function usb_control_msg to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function dev_err to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function tty_get_baud_rate to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function tty_termios_copy_hw to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function tty_encode_baud_rate to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function ldv_undefined_pointer to be a constant function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function usb_submit_urb to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Assuming external function usb_serial_generic_open 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 usb_deregister to be a pure function. (PredicateCPA:ExpressionToFormulaVisitor.visit, INFO) Stopping analysis ... (CPAchecker.runAlgorithm, INFO) PredicateCPA statistics ----------------------- Number of abstractions: 6 (0% of all post computations) Times abstraction was reused: 0 Because of function entry/exit: 0 (0%) Because of loop head: 6 (100%) Because of join nodes: 0 (0%) Because of threshold: 0 (0%) Times precision was empty: 1 (17%) Times precision was {false}: 0 (0%) Times result was cached: 0 (0%) Times cartesian abs was used: 0 (0%) Times boolean abs was used: 5 (83%) Times result was 'false': 0 (0%) Number of strengthen sat checks: 9 Times result was 'false': 8 (89%) Number of coverage checks: 331 BDD entailment checks: 3 Number of SMT sat checks: 9 trivial: 0 cached: 0 Max ABE block size: 112 Number of predicates discovered: 4 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: 4 Avg number of predicates per abstraction: 4.00 Number of irrelevant predicates: 0 (0%) Number of preds handled by boolean abs: 20 (100%) Total number of models for allsat: 5 Max number of models for allsat: 1 Avg number of models for allsat: 1.00 Number of path formula cache hits: 683 (48%) Time for post operator: 0.160s Time for path formula creation: 0.146s Actual computation: 0.135s Time for strengthen operator: 0.195s Time for satisfiability checks: 0.187s Time for prec operator: 0.281s Time for abstraction: 0.277s (Max: 0.229s, Count: 6) Boolean abstraction: 0.129s Solving time: 0.103s (Max: 0.097s) Model enumeration time: 0.015s Time for BDD construction: 0.002s (Max: 0.002s) Time for merge operator: 0.082s Time for coverage check: 0.001s Time for BDD entailment checks: 0.000s Total time for SMT solver (w/o itp): 0.305s Number of BDD nodes: 208 Size of BDD node table: 10007 Size of BDD node cleanup queue: 0 (count: 37, 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: 0.070s Automaton transfers with branching: 0 Automaton transfer successors: 3238 (count: 3238, min: 1, max: 1, avg: 1,00) [1 x 3238] CPA algorithm statistics ------------------------ Number of iterations: 1171 Max size of waitlist: 15 Average size of waitlist: 7 Number of computed successors: 1346 Max successors for one state: 2 Number of times merged: 164 Number of times stopped: 167 Number of times breaked: 1 Total time for CPA algorithm: 1.015s (Max: 0.561s) Time for choose from waitlist: 0.012s Time for precision adjustment: 0.315s Time for transfer relation: 0.511s Time for merge operator: 0.101s Time for stop operator: 0.012s Time for adding to reached set: 0.026s Predicate-Abstraction Refiner statistics ---------------------------------------- Avg. length of target path (in blocks): 2 (count: 1, min: 2, max: 2, avg: 2,00) Time for refinement: 0.070s Counterexample analysis: 0.051s (Max: 0.051s, Calls: 1) Refinement sat check: 0.047s Interpolant computation: 0.000s Error path post-processing: 0.000s Path-formulas extraction: 0.000s Building the counterexample trace: 0.051s 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.: 527 Max. size of reached set after ref.: 1 Avg. size of reached set before ref.: 527.00 Avg. size of reached set after ref.: 1.00 Total time for CEGAR algorithm: 1.096s Time for refinements: 0.080s Average time for refinement: 0.080s Max time for refinement: 0.080s Counterexample-Check Algorithm statistics ----------------------------------------- Number of counterexample checks: 0 CPAchecker general statistics ----------------------------- Number of program locations: 603 Number of functions: 30 Number of loops: 2 Size of reached set: 654 Number of reached locations: 539 (89%) Avg states per location: 1 Max states per location: 8 (at node N968) Number of reached functions: 25 (83%) Number of partitions: 654 Avg size of partitions: 1 Max size of partitions: 1 Number of target states: 0 Time for analysis setup: 2.216s Time for loading CPAs: 0.598s Time for loading parser: 0.292s Time for CFA construction: 1.235s Time for parsing file(s): 0.428s Time for AST to CFA: 0.495s Time for CFA sanity check: 0.000s Time for post-processing: 0.187s Time for var class.: 0.000s Time for Analysis: 1.098s CPU time for analysis: 1.820s Total time for CPAchecker: 3.316s Total CPU time for CPAchecker: 5.290s Time for Garbage Collector: 0.000s (in 0 runs) Garbage Collector(s) used: PS MarkSweep, PS Scavenge Used heap memory: 264MB ( 252 MiB) max; 177MB ( 168 MiB) avg; 264MB ( 252 MiB) peak Used non-heap memory: 22MB ( 21 MiB) max; 16MB ( 15 MiB) avg; 22MB ( 21 MiB) peak Used in PS Old Gen pool: 0MB ( 0 MiB) max; 0MB ( 0 MiB) avg; 0MB ( 0 MiB) peak Allocated heap memory: 2024MB ( 1930 MiB) max; 2024MB ( 1930 MiB) avg Allocated non-heap memory: 24MB ( 23 MiB) max; 24MB ( 23 MiB) avg Total process virtual memory: 57056MB ( 54412 MiB) max; 57054MB ( 54411 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".