java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/rlim_exit_true-unreach-call_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:46:16,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:46:16,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:46:16,769 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:46:16,770 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:46:16,771 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:46:16,772 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:46:16,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:46:16,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:46:16,777 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:46:16,778 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:46:16,778 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:46:16,779 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:46:16,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:46:16,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:46:16,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:46:16,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:46:16,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:46:16,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:46:16,789 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:46:16,790 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:46:16,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:46:16,794 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 15:46:16,794 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 15:46:16,794 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 15:46:16,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 15:46:16,796 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 15:46:16,797 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 15:46:16,798 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 15:46:16,799 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 15:46:16,799 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 15:46:16,800 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 15:46:16,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 15:46:16,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 15:46:16,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 15:46:16,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 15:46:16,803 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 15:46:16,831 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:46:16,831 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:46:16,832 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:46:16,834 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:46:16,835 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:46:16,835 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:46:16,835 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:46:16,835 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:46:16,836 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:46:16,836 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:46:16,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:46:16,836 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:46:16,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:46:16,836 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:46:16,837 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:46:16,837 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:46:16,837 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:46:16,837 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:46:16,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:46:16,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:46:16,839 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:46:16,840 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:46:16,840 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:46:16,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:46:16,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:46:16,841 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:46:16,841 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:46:16,841 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:46:16,841 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:46:16,842 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:46:16,842 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:46:16,842 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:46:16,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:46:16,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:46:16,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:46:16,941 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:46:16,942 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:46:16,942 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_exit_true-unreach-call_true-termination.c [2018-09-19 15:46:17,315 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6876e2dc6/dc0303592925409bb33e4fbc6140fe00/FLAGe41340717 [2018-09-19 15:46:17,489 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:46:17,490 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit_true-unreach-call_true-termination.c [2018-09-19 15:46:17,497 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6876e2dc6/dc0303592925409bb33e4fbc6140fe00/FLAGe41340717 [2018-09-19 15:46:17,513 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6876e2dc6/dc0303592925409bb33e4fbc6140fe00 [2018-09-19 15:46:17,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:46:17,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:46:17,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:46:17,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:46:17,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:46:17,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316b59d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17, skipping insertion in model container [2018-09-19 15:46:17,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,552 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:46:17,767 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:46:17,795 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:46:17,806 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:46:17,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17 WrapperNode [2018-09-19 15:46:17,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:46:17,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:46:17,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:46:17,832 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:46:17,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... [2018-09-19 15:46:17,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:46:17,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:46:17,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:46:17,886 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:46:17,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:46:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:46:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:46:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 15:46:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:46:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:46:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 15:46:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-19 15:46:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 15:46:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:46:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:46:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:46:18,629 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:46:18,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:46:18 BoogieIcfgContainer [2018-09-19 15:46:18,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:46:18,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:46:18,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:46:18,634 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:46:18,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:46:17" (1/3) ... [2018-09-19 15:46:18,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d02dd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:46:18, skipping insertion in model container [2018-09-19 15:46:18,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:46:17" (2/3) ... [2018-09-19 15:46:18,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d02dd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:46:18, skipping insertion in model container [2018-09-19 15:46:18,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:46:18" (3/3) ... [2018-09-19 15:46:18,641 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_exit_true-unreach-call_true-termination.c [2018-09-19 15:46:18,655 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:46:18,666 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 15:46:18,728 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:46:18,729 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:46:18,729 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:46:18,729 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:46:18,729 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:46:18,729 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:46:18,730 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:46:18,730 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:46:18,730 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:46:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-09-19 15:46:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 15:46:18,754 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:18,755 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:18,760 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:18,766 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2018-09-19 15:46:18,770 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:18,771 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:18,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:46:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:46:18,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:46:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:18,850 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:46:18,862 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:46:18,863 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 15:46:18,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 15:46:18,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 15:46:18,882 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:46:18,885 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-09-19 15:46:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:46:18,909 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-09-19 15:46:18,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 15:46:18,911 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-19 15:46:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:46:18,932 INFO L225 Difference]: With dead ends: 34 [2018-09-19 15:46:18,933 INFO L226 Difference]: Without dead ends: 15 [2018-09-19 15:46:18,940 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:46:18,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-19 15:46:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-19 15:46:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-19 15:46:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-09-19 15:46:18,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2018-09-19 15:46:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:46:18,986 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-09-19 15:46:18,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 15:46:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-09-19 15:46:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 15:46:18,987 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:18,987 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:18,987 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1436274269, now seen corresponding path program 1 times [2018-09-19 15:46:18,988 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:18,988 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:18,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:46:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:46:19,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:46:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:19,045 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:46:19,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:46:19,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 15:46:19,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 15:46:19,057 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 15:46:19,057 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:46:19,058 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-09-19 15:46:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:46:19,339 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-19 15:46:19,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 15:46:19,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-19 15:46:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:46:19,346 INFO L225 Difference]: With dead ends: 25 [2018-09-19 15:46:19,347 INFO L226 Difference]: Without dead ends: 20 [2018-09-19 15:46:19,348 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:46:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-19 15:46:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2018-09-19 15:46:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-19 15:46:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-19 15:46:19,353 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2018-09-19 15:46:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:46:19,354 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-19 15:46:19,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 15:46:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-19 15:46:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-19 15:46:19,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:19,355 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:19,355 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:19,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2039867791, now seen corresponding path program 1 times [2018-09-19 15:46:19,356 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:19,356 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 15:46:19,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:46:19,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:46:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:19,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:46:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:19,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:46:19,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-09-19 15:46:19,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 15:46:19,561 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 15:46:19,561 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 15:46:19,562 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2018-09-19 15:46:19,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:46:19,962 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2018-09-19 15:46:19,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 15:46:19,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-09-19 15:46:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:46:19,966 INFO L225 Difference]: With dead ends: 37 [2018-09-19 15:46:19,966 INFO L226 Difference]: Without dead ends: 32 [2018-09-19 15:46:19,967 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-09-19 15:46:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-19 15:46:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-19 15:46:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-19 15:46:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2018-09-19 15:46:19,974 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 15 [2018-09-19 15:46:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:46:19,974 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-09-19 15:46:19,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 15:46:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2018-09-19 15:46:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-19 15:46:19,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:19,976 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:19,977 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1424440027, now seen corresponding path program 2 times [2018-09-19 15:46:19,978 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:19,978 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:19,987 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-09-19 15:46:20,266 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-19 15:46:20,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:46:20,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:46:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:20,404 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:46:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:20,853 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:46:20,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-09-19 15:46:20,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 15:46:20,855 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 15:46:20,855 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-09-19 15:46:20,856 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 12 states. [2018-09-19 15:46:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:46:22,735 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2018-09-19 15:46:22,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 15:46:22,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-09-19 15:46:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:46:22,741 INFO L225 Difference]: With dead ends: 67 [2018-09-19 15:46:22,741 INFO L226 Difference]: Without dead ends: 62 [2018-09-19 15:46:22,743 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2018-09-19 15:46:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-19 15:46:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-09-19 15:46:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-19 15:46:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2018-09-19 15:46:22,754 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 27 [2018-09-19 15:46:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:46:22,755 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2018-09-19 15:46:22,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 15:46:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2018-09-19 15:46:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 15:46:22,757 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:22,757 INFO L376 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:22,758 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:22,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1835013807, now seen corresponding path program 3 times [2018-09-19 15:46:22,759 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:22,759 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:22,763 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-09-19 15:46:24,105 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-19 15:46:24,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:46:24,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:46:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:24,422 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:46:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:25,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:46:25,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-09-19 15:46:25,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-19 15:46:25,127 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-19 15:46:25,128 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-09-19 15:46:25,128 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand 24 states. [2018-09-19 15:46:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:46:30,107 INFO L93 Difference]: Finished difference Result 127 states and 182 transitions. [2018-09-19 15:46:30,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-19 15:46:30,111 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 51 [2018-09-19 15:46:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:46:30,114 INFO L225 Difference]: With dead ends: 127 [2018-09-19 15:46:30,114 INFO L226 Difference]: Without dead ends: 122 [2018-09-19 15:46:30,115 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2018-09-19 15:46:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-09-19 15:46:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-09-19 15:46:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-09-19 15:46:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2018-09-19 15:46:30,137 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 51 [2018-09-19 15:46:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:46:30,137 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2018-09-19 15:46:30,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-19 15:46:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2018-09-19 15:46:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-09-19 15:46:30,141 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:30,142 INFO L376 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:30,142 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:30,142 INFO L82 PathProgramCache]: Analyzing trace with hash 81926743, now seen corresponding path program 4 times [2018-09-19 15:46:30,143 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:30,143 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:30,148 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-19 15:46:30,684 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-19 15:46:30,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:46:30,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:46:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:31,192 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:46:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:46:33,176 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:46:33,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2018-09-19 15:46:33,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-19 15:46:33,178 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-19 15:46:33,181 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2018-09-19 15:46:33,182 INFO L87 Difference]: Start difference. First operand 122 states and 166 transitions. Second operand 48 states. [2018-09-19 15:46:41,784 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 7 [2018-09-19 15:46:42,263 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 7 [2018-09-19 15:46:43,568 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 7 [2018-09-19 15:46:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:46:54,075 INFO L93 Difference]: Finished difference Result 247 states and 362 transitions. [2018-09-19 15:46:54,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-19 15:46:54,079 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 99 [2018-09-19 15:46:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:46:54,083 INFO L225 Difference]: With dead ends: 247 [2018-09-19 15:46:54,084 INFO L226 Difference]: Without dead ends: 242 [2018-09-19 15:46:54,086 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2018-09-19 15:46:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-09-19 15:46:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-09-19 15:46:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-09-19 15:46:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2018-09-19 15:46:54,112 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 99 [2018-09-19 15:46:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:46:54,112 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2018-09-19 15:46:54,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-19 15:46:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2018-09-19 15:46:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-19 15:46:54,116 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:46:54,116 INFO L376 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:46:54,117 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:46:54,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1797828185, now seen corresponding path program 5 times [2018-09-19 15:46:54,118 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:46:54,118 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 15:46:54,126 INFO L101 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2018-09-19 15:47:48,867 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2018-09-19 15:47:48,868 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:47:49,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:47:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:47:50,719 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:47:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:47:58,171 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:47:58,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2018-09-19 15:47:58,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-19 15:47:58,175 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-19 15:47:58,177 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2018-09-19 15:47:58,178 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand 96 states. [2018-09-19 15:48:27,279 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 7 [2018-09-19 15:48:29,205 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 7 [2018-09-19 15:48:31,369 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 7 [2018-09-19 15:48:33,635 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 7 [2018-09-19 15:48:36,030 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 7 [2018-09-19 15:48:38,527 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 7 [2018-09-19 15:48:41,216 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 7 [2018-09-19 15:48:43,904 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 7 [2018-09-19 15:48:46,612 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 7 [2018-09-19 15:48:49,407 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 7 [2018-09-19 15:48:52,130 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 7 [2018-09-19 15:48:54,840 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 7 [2018-09-19 15:48:57,740 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 7 [2018-09-19 15:49:00,459 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 7 [2018-09-19 15:49:03,360 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 7 [2018-09-19 15:49:06,323 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 7 [2018-09-19 15:49:09,333 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 7 [2018-09-19 15:49:12,325 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 7 [2018-09-19 15:49:15,263 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 7 [2018-09-19 15:49:18,278 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 7 [2018-09-19 15:49:21,133 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 7 [2018-09-19 15:49:23,951 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 7 [2018-09-19 15:49:26,835 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 7 [2018-09-19 15:49:29,448 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 7 [2018-09-19 15:49:32,045 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 7 [2018-09-19 15:49:34,492 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 7 [2018-09-19 15:49:36,857 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 7 [2018-09-19 15:49:39,195 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 7 [2018-09-19 15:49:41,718 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 7 [2018-09-19 15:50:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:50:05,977 INFO L93 Difference]: Finished difference Result 487 states and 722 transitions. [2018-09-19 15:50:05,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-19 15:50:05,981 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 195 [2018-09-19 15:50:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:50:05,985 INFO L225 Difference]: With dead ends: 487 [2018-09-19 15:50:05,985 INFO L226 Difference]: Without dead ends: 482 [2018-09-19 15:50:05,991 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 102.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2018-09-19 15:50:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-09-19 15:50:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2018-09-19 15:50:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-09-19 15:50:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 670 transitions. [2018-09-19 15:50:06,032 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 670 transitions. Word has length 195 [2018-09-19 15:50:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:50:06,033 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 670 transitions. [2018-09-19 15:50:06,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-19 15:50:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 670 transitions. [2018-09-19 15:50:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-19 15:50:06,042 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:50:06,043 INFO L376 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:50:06,043 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:50:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1912176569, now seen corresponding path program 6 times [2018-09-19 15:50:06,045 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:50:06,045 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 15:50:06,061 INFO L101 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown