/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:10,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:10,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:10,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:10,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:10,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:10,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:10,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:10,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:10,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:10,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:10,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:10,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:10,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:10,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:10,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:10,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:10,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:10,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:10,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:10,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:10,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:10,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:10,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:10,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:10,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:10,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:10,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:10,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:10,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:10,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:10,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:10,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:10,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:10,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:10,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:10,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:10,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:10,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:10,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:10,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:10,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:34:10,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:10,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:10,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:10,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:10,451 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:10,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:10,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:10,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:10,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:10,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:10,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:10,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:10,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:10,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:10,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:10,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:10,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:10,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:10,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:10,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:10,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:10,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:10,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:10,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:10,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:10,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:10,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:10,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:10,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:10,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:10,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:10,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:10,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:10,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:10,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:10,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2020-10-12 15:34:10,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6988d3046/8f0c3308d8924e6cad51e466d86d792e/FLAG82d36118b [2020-10-12 15:34:11,366 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:11,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2020-10-12 15:34:11,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6988d3046/8f0c3308d8924e6cad51e466d86d792e/FLAG82d36118b [2020-10-12 15:34:11,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6988d3046/8f0c3308d8924e6cad51e466d86d792e [2020-10-12 15:34:11,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:11,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:11,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:11,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:11,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:11,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:11" (1/1) ... [2020-10-12 15:34:11,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a087e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:11, skipping insertion in model container [2020-10-12 15:34:11,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:11" (1/1) ... [2020-10-12 15:34:11,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:11,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:12,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:12,187 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:12,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:12,312 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:12,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12 WrapperNode [2020-10-12 15:34:12,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:12,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:12,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:12,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:12,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... [2020-10-12 15:34:12,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:12,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:12,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:12,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:12,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 15:34:12,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:12,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:12,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:12,468 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:12,472 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:12,472 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:34:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:34:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:12,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:12,991 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-12 15:34:12,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:12 BoogieIcfgContainer [2020-10-12 15:34:12,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:12,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:12,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:13,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:13,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:11" (1/3) ... [2020-10-12 15:34:13,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584f8bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:13, skipping insertion in model container [2020-10-12 15:34:13,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:12" (2/3) ... [2020-10-12 15:34:13,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584f8bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:13, skipping insertion in model container [2020-10-12 15:34:13,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:12" (3/3) ... [2020-10-12 15:34:13,007 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2020-10-12 15:34:13,019 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:13,028 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-12 15:34:13,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-12 15:34:13,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:13,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:13,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:13,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:13,064 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:13,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:13,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:13,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-12 15:34:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:34:13,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:13,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:13,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:13,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-10-12 15:34:13,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:13,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262761067] [2020-10-12 15:34:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:34:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-12 15:34:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:34:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:13,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:13,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:13,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:13,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:13,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262761067] [2020-10-12 15:34:13,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:13,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:13,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926204028] [2020-10-12 15:34:13,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:13,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:13,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:13,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:13,782 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-12 15:34:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:14,088 INFO L93 Difference]: Finished difference Result 83 states and 130 transitions. [2020-10-12 15:34:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:14,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 15:34:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:14,099 INFO L225 Difference]: With dead ends: 83 [2020-10-12 15:34:14,099 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 15:34:14,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 15:34:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-12 15:34:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 15:34:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-12 15:34:14,145 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 10 [2020-10-12 15:34:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:14,146 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-12 15:34:14,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-12 15:34:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:34:14,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:14,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:14,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:14,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-10-12 15:34:14,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:14,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497676391] [2020-10-12 15:34:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:14,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:34:14,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 15:34:14,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:34:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:14,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:14,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:14,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:14,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:14,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497676391] [2020-10-12 15:34:14,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:14,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:14,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401303430] [2020-10-12 15:34:14,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:14,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:14,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:14,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:14,368 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-12 15:34:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:14,590 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-12 15:34:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:34:14,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-12 15:34:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:14,592 INFO L225 Difference]: With dead ends: 54 [2020-10-12 15:34:14,592 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 15:34:14,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 15:34:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-12 15:34:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:34:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-12 15:34:14,613 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 14 [2020-10-12 15:34:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:14,614 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-12 15:34:14,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-12 15:34:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 15:34:14,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:14,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:14,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:14,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:14,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:14,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-10-12 15:34:14,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:14,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914534789] [2020-10-12 15:34:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:14,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:14,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:34:14,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 15:34:14,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:34:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914534789] [2020-10-12 15:34:15,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:15,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255679160] [2020-10-12 15:34:15,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:15,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:15,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:15,053 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 6 states. [2020-10-12 15:34:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:15,340 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-12 15:34:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:34:15,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-12 15:34:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:15,342 INFO L225 Difference]: With dead ends: 61 [2020-10-12 15:34:15,342 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 15:34:15,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:15,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 15:34:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-12 15:34:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:34:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-12 15:34:15,360 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 17 [2020-10-12 15:34:15,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:15,360 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-12 15:34:15,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-12 15:34:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 15:34:15,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:15,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:15,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:15,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:15,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2075946271, now seen corresponding path program 1 times [2020-10-12 15:34:15,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:15,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544027879] [2020-10-12 15:34:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:34:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 15:34:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:15,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:15,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544027879] [2020-10-12 15:34:15,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:15,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:15,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466679472] [2020-10-12 15:34:15,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:15,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:15,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:15,627 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 6 states. [2020-10-12 15:34:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:15,815 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-12 15:34:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:34:15,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-12 15:34:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:15,817 INFO L225 Difference]: With dead ends: 53 [2020-10-12 15:34:15,817 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 15:34:15,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:15,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 15:34:15,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-12 15:34:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 15:34:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-12 15:34:15,825 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 17 [2020-10-12 15:34:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:15,825 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-12 15:34:15,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-12 15:34:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:34:15,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:15,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:15,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:15,827 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:15,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1087811858, now seen corresponding path program 1 times [2020-10-12 15:34:15,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:15,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665068634] [2020-10-12 15:34:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:34:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-12 15:34:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:34:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:16,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:16,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665068634] [2020-10-12 15:34:16,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:16,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:16,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501534980] [2020-10-12 15:34:16,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:16,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:16,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:16,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:16,528 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 7 states. [2020-10-12 15:34:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:16,746 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-10-12 15:34:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:16,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 15:34:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:16,750 INFO L225 Difference]: With dead ends: 75 [2020-10-12 15:34:16,750 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 15:34:16,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 15:34:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2020-10-12 15:34:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 15:34:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2020-10-12 15:34:16,760 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 20 [2020-10-12 15:34:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:16,760 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2020-10-12 15:34:16,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2020-10-12 15:34:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:34:16,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:16,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:16,762 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1068600021, now seen corresponding path program 1 times [2020-10-12 15:34:16,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697584494] [2020-10-12 15:34:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:34:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 15:34:16,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:34:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697584494] [2020-10-12 15:34:17,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:17,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:34:17,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938574240] [2020-10-12 15:34:17,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:17,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:17,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:17,121 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 7 states. [2020-10-12 15:34:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,397 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-10-12 15:34:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:17,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 15:34:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,399 INFO L225 Difference]: With dead ends: 69 [2020-10-12 15:34:17,399 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 15:34:17,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 15:34:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-12 15:34:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 15:34:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-10-12 15:34:17,409 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 20 [2020-10-12 15:34:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,409 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-10-12 15:34:17,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-10-12 15:34:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:34:17,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:17,411 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1161462653, now seen corresponding path program 2 times [2020-10-12 15:34:17,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346429410] [2020-10-12 15:34:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:34:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-12 15:34:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:34:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:18,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:18,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:18,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346429410] [2020-10-12 15:34:18,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:18,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:18,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164310716] [2020-10-12 15:34:18,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:18,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:18,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:18,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:18,316 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 8 states. [2020-10-12 15:34:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,464 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-10-12 15:34:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:34:18,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-12 15:34:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,465 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:34:18,465 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:34:18,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:34:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2020-10-12 15:34:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 15:34:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-12 15:34:18,472 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-10-12 15:34:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,473 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-12 15:34:18,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-12 15:34:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:34:18,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:18,474 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1142250816, now seen corresponding path program 1 times [2020-10-12 15:34:18,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060240092] [2020-10-12 15:34:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:34:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-12 15:34:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:34:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:34:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060240092] [2020-10-12 15:34:19,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:19,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:19,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063176489] [2020-10-12 15:34:19,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:19,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:19,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:19,338 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 9 states. [2020-10-12 15:34:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:19,785 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2020-10-12 15:34:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:19,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-12 15:34:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:19,787 INFO L225 Difference]: With dead ends: 110 [2020-10-12 15:34:19,787 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 15:34:19,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 15:34:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2020-10-12 15:34:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 15:34:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-12 15:34:19,803 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 26 [2020-10-12 15:34:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:19,805 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-12 15:34:19,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-12 15:34:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:19,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:19,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:19,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:19,807 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1003325811, now seen corresponding path program 1 times [2020-10-12 15:34:19,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:19,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979041871] [2020-10-12 15:34:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:20,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-12 15:34:20,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:34:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:20,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979041871] [2020-10-12 15:34:20,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:20,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:20,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934318455] [2020-10-12 15:34:20,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:20,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:20,695 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 9 states. [2020-10-12 15:34:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:21,077 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2020-10-12 15:34:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:21,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-12 15:34:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:21,078 INFO L225 Difference]: With dead ends: 86 [2020-10-12 15:34:21,079 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:34:21,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:34:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2020-10-12 15:34:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:34:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-10-12 15:34:21,088 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 27 [2020-10-12 15:34:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:21,089 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-10-12 15:34:21,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-10-12 15:34:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:34:21,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:21,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:21,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:21,091 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:21,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:21,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1307682849, now seen corresponding path program 1 times [2020-10-12 15:34:21,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:21,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478394312] [2020-10-12 15:34:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:34:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:34:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-12 15:34:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:34:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:22,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:22,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:22,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478394312] [2020-10-12 15:34:22,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:22,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:22,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093706072] [2020-10-12 15:34:22,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:22,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:22,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:22,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:22,218 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 9 states. [2020-10-12 15:34:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:22,462 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2020-10-12 15:34:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:22,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-12 15:34:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:22,464 INFO L225 Difference]: With dead ends: 80 [2020-10-12 15:34:22,464 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 15:34:22,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 15:34:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-12 15:34:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:34:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-12 15:34:22,472 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 30 [2020-10-12 15:34:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:22,472 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-12 15:34:22,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-12 15:34:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:34:22,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:22,474 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:22,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:22,475 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash 432046418, now seen corresponding path program 1 times [2020-10-12 15:34:22,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:22,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929363218] [2020-10-12 15:34:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:34:22,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-12 15:34:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:34:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929363218] [2020-10-12 15:34:23,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:23,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387608866] [2020-10-12 15:34:23,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:23,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:23,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:23,491 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand 11 states. [2020-10-12 15:34:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:23,995 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2020-10-12 15:34:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:23,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-12 15:34:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:23,996 INFO L225 Difference]: With dead ends: 77 [2020-10-12 15:34:23,997 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:34:23,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:34:24,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2020-10-12 15:34:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:34:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-12 15:34:24,005 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 30 [2020-10-12 15:34:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:24,005 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-12 15:34:24,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-12 15:34:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:24,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:24,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:24,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:24,007 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:24,008 INFO L82 PathProgramCache]: Analyzing trace with hash 722367339, now seen corresponding path program 2 times [2020-10-12 15:34:24,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:24,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013221709] [2020-10-12 15:34:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:24,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-12 15:34:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:34:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:25,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:25,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:25,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:25,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:25,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013221709] [2020-10-12 15:34:25,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:25,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:25,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706188719] [2020-10-12 15:34:25,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:25,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:25,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:25,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:25,258 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand 11 states. [2020-10-12 15:34:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:25,855 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-10-12 15:34:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:25,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 15:34:25,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:25,857 INFO L225 Difference]: With dead ends: 92 [2020-10-12 15:34:25,857 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 15:34:25,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 15:34:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2020-10-12 15:34:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 15:34:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-10-12 15:34:25,866 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 32 [2020-10-12 15:34:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:25,867 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-10-12 15:34:25,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-10-12 15:34:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:25,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:25,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:25,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:25,869 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1176084370, now seen corresponding path program 1 times [2020-10-12 15:34:25,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:25,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455666230] [2020-10-12 15:34:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:26,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-12 15:34:26,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:34:26,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:26,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455666230] [2020-10-12 15:34:26,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:26,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:26,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204128452] [2020-10-12 15:34:26,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:26,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:26,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:26,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:26,515 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 10 states. [2020-10-12 15:34:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,911 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-10-12 15:34:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:26,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-12 15:34:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,912 INFO L225 Difference]: With dead ends: 91 [2020-10-12 15:34:26,912 INFO L226 Difference]: Without dead ends: 89 [2020-10-12 15:34:26,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-12 15:34:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2020-10-12 15:34:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:34:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-10-12 15:34:26,922 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 32 [2020-10-12 15:34:26,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,922 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-10-12 15:34:26,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:26,923 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-10-12 15:34:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:26,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:26,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:26,924 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1134811710, now seen corresponding path program 1 times [2020-10-12 15:34:26,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324198553] [2020-10-12 15:34:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:27,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:27,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-12 15:34:27,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:28,176 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-12 15:34:28,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:28,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324198553] [2020-10-12 15:34:28,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:28,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:28,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382264361] [2020-10-12 15:34:28,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:28,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:28,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:28,283 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 12 states. [2020-10-12 15:34:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:28,958 INFO L93 Difference]: Finished difference Result 125 states and 155 transitions. [2020-10-12 15:34:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:28,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-12 15:34:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:28,960 INFO L225 Difference]: With dead ends: 125 [2020-10-12 15:34:28,960 INFO L226 Difference]: Without dead ends: 104 [2020-10-12 15:34:28,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-12 15:34:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2020-10-12 15:34:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 15:34:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2020-10-12 15:34:28,977 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 33 [2020-10-12 15:34:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:28,977 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2020-10-12 15:34:28,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2020-10-12 15:34:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:28,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:28,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:28,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:34:28,982 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:28,983 INFO L82 PathProgramCache]: Analyzing trace with hash -965435656, now seen corresponding path program 2 times [2020-10-12 15:34:28,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:28,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332691948] [2020-10-12 15:34:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:29,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-12 15:34:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:30,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332691948] [2020-10-12 15:34:30,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:30,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:30,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919537365] [2020-10-12 15:34:30,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:30,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:30,178 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 11 states. [2020-10-12 15:34:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,877 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2020-10-12 15:34:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:30,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-12 15:34:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,880 INFO L225 Difference]: With dead ends: 115 [2020-10-12 15:34:30,880 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 15:34:30,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 15:34:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 80. [2020-10-12 15:34:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 15:34:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2020-10-12 15:34:30,894 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 33 [2020-10-12 15:34:30,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,895 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2020-10-12 15:34:30,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2020-10-12 15:34:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:34:30,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:30,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:34:30,898 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,898 INFO L82 PathProgramCache]: Analyzing trace with hash -165752378, now seen corresponding path program 1 times [2020-10-12 15:34:30,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803443179] [2020-10-12 15:34:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:34,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:34,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:34:34,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:34:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4039 [2020-10-12 15:34:34,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:34:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:35,418 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-12 15:34:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:35,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:35,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803443179] [2020-10-12 15:34:35,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:35,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:35,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278972776] [2020-10-12 15:34:35,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:35,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:35,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:35,666 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 11 states. [2020-10-12 15:34:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:36,081 INFO L93 Difference]: Finished difference Result 117 states and 143 transitions. [2020-10-12 15:34:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:36,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-12 15:34:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:36,083 INFO L225 Difference]: With dead ends: 117 [2020-10-12 15:34:36,084 INFO L226 Difference]: Without dead ends: 107 [2020-10-12 15:34:36,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-12 15:34:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2020-10-12 15:34:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 15:34:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2020-10-12 15:34:36,097 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 34 [2020-10-12 15:34:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:36,098 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2020-10-12 15:34:36,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2020-10-12 15:34:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:34:36,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:36,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:36,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:34:36,100 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash -558779388, now seen corresponding path program 1 times [2020-10-12 15:34:36,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:36,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089214833] [2020-10-12 15:34:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:34:36,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-12 15:34:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:36,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:36,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:36,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089214833] [2020-10-12 15:34:36,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:36,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:36,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412511857] [2020-10-12 15:34:36,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:36,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:36,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:36,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:36,830 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 9 states. [2020-10-12 15:34:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:37,305 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2020-10-12 15:34:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:37,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-12 15:34:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:37,308 INFO L225 Difference]: With dead ends: 121 [2020-10-12 15:34:37,308 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 15:34:37,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 15:34:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-12 15:34:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 15:34:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2020-10-12 15:34:37,321 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 34 [2020-10-12 15:34:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:37,322 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2020-10-12 15:34:37,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2020-10-12 15:34:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:37,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:37,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:37,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:34:37,323 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:37,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1826398334, now seen corresponding path program 1 times [2020-10-12 15:34:37,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:37,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385765595] [2020-10-12 15:34:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-12 15:34:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:34:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:38,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:38,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:38,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385765595] [2020-10-12 15:34:38,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:38,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:38,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975021887] [2020-10-12 15:34:38,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:38,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:38,637 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 12 states. [2020-10-12 15:34:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:39,499 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-10-12 15:34:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:34:39,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-12 15:34:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:39,501 INFO L225 Difference]: With dead ends: 144 [2020-10-12 15:34:39,501 INFO L226 Difference]: Without dead ends: 142 [2020-10-12 15:34:39,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-12 15:34:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 102. [2020-10-12 15:34:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-12 15:34:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 128 transitions. [2020-10-12 15:34:39,519 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 128 transitions. Word has length 35 [2020-10-12 15:34:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:39,520 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 128 transitions. [2020-10-12 15:34:39,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 128 transitions. [2020-10-12 15:34:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:34:39,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:39,521 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:39,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:34:39,522 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 345803261, now seen corresponding path program 2 times [2020-10-12 15:34:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:39,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827610843] [2020-10-12 15:34:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:34:40,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 15:34:40,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:34:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,392 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-12 15:34:40,517 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-12 15:34:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:40,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:40,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:40,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827610843] [2020-10-12 15:34:40,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:40,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:40,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843200218] [2020-10-12 15:34:40,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:40,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:40,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:40,769 INFO L87 Difference]: Start difference. First operand 102 states and 128 transitions. Second operand 12 states. [2020-10-12 15:34:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:41,443 INFO L93 Difference]: Finished difference Result 146 states and 178 transitions. [2020-10-12 15:34:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:41,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-12 15:34:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:41,447 INFO L225 Difference]: With dead ends: 146 [2020-10-12 15:34:41,447 INFO L226 Difference]: Without dead ends: 144 [2020-10-12 15:34:41,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-12 15:34:41,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 95. [2020-10-12 15:34:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 15:34:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2020-10-12 15:34:41,464 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 36 [2020-10-12 15:34:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:41,465 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2020-10-12 15:34:41,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2020-10-12 15:34:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:34:41,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:41,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:41,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:34:41,466 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:41,466 INFO L82 PathProgramCache]: Analyzing trace with hash -222812406, now seen corresponding path program 3 times [2020-10-12 15:34:41,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:41,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958781502] [2020-10-12 15:34:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:34:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-12 15:34:42,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:34:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:42,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:42,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:42,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958781502] [2020-10-12 15:34:42,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:42,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:42,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504794506] [2020-10-12 15:34:42,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:42,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:42,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:42,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:42,928 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand 12 states. [2020-10-12 15:34:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:43,679 INFO L93 Difference]: Finished difference Result 147 states and 180 transitions. [2020-10-12 15:34:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:43,680 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-12 15:34:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:43,681 INFO L225 Difference]: With dead ends: 147 [2020-10-12 15:34:43,681 INFO L226 Difference]: Without dead ends: 145 [2020-10-12 15:34:43,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-12 15:34:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 88. [2020-10-12 15:34:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:34:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-10-12 15:34:43,693 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 37 [2020-10-12 15:34:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:43,693 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-10-12 15:34:43,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-10-12 15:34:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:34:43,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:43,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:43,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:34:43,694 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:43,695 INFO L82 PathProgramCache]: Analyzing trace with hash -552927914, now seen corresponding path program 3 times [2020-10-12 15:34:43,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:43,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707627955] [2020-10-12 15:34:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:44,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:34:44,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-12 15:34:44,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:34:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:44,983 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-10-12 15:34:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:45,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:45,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:45,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707627955] [2020-10-12 15:34:45,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:45,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:45,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034300644] [2020-10-12 15:34:45,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:45,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:45,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:45,405 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 12 states. [2020-10-12 15:34:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:46,227 INFO L93 Difference]: Finished difference Result 141 states and 173 transitions. [2020-10-12 15:34:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:46,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-12 15:34:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:46,228 INFO L225 Difference]: With dead ends: 141 [2020-10-12 15:34:46,229 INFO L226 Difference]: Without dead ends: 139 [2020-10-12 15:34:46,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-12 15:34:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 101. [2020-10-12 15:34:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 15:34:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2020-10-12 15:34:46,242 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 38 [2020-10-12 15:34:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:46,242 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2020-10-12 15:34:46,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2020-10-12 15:34:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:34:46,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:46,243 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:46,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:34:46,243 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash -99210883, now seen corresponding path program 1 times [2020-10-12 15:34:46,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:46,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460701186] [2020-10-12 15:34:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:34:47,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-12 15:34:47,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:34:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:47,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:47,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:47,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:47,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460701186] [2020-10-12 15:34:47,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:47,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:47,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906848211] [2020-10-12 15:34:47,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:47,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:47,898 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand 13 states. [2020-10-12 15:34:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:48,599 INFO L93 Difference]: Finished difference Result 156 states and 193 transitions. [2020-10-12 15:34:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:48,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-12 15:34:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:48,603 INFO L225 Difference]: With dead ends: 156 [2020-10-12 15:34:48,603 INFO L226 Difference]: Without dead ends: 154 [2020-10-12 15:34:48,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-12 15:34:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 108. [2020-10-12 15:34:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 15:34:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2020-10-12 15:34:48,615 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 38 [2020-10-12 15:34:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:48,615 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2020-10-12 15:34:48,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:34:48,615 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2020-10-12 15:34:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:34:48,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:48,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:48,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:34:48,616 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -262914264, now seen corresponding path program 1 times [2020-10-12 15:34:48,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:48,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659829244] [2020-10-12 15:34:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:34:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:50,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659829244] [2020-10-12 15:34:50,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:50,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:50,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533808544] [2020-10-12 15:34:50,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:50,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:50,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:50,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:50,398 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand 11 states. [2020-10-12 15:34:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:50,936 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2020-10-12 15:34:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:50,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-12 15:34:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:50,939 INFO L225 Difference]: With dead ends: 162 [2020-10-12 15:34:50,939 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 15:34:50,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 15:34:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-10-12 15:34:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-12 15:34:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 155 transitions. [2020-10-12 15:34:50,955 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 155 transitions. Word has length 39 [2020-10-12 15:34:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:50,955 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 155 transitions. [2020-10-12 15:34:50,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 155 transitions. [2020-10-12 15:34:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:34:50,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:50,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:50,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:34:50,956 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:50,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1844882835, now seen corresponding path program 3 times [2020-10-12 15:34:50,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:50,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182275206] [2020-10-12 15:34:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:34:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:52,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182275206] [2020-10-12 15:34:52,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:52,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:52,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585606467] [2020-10-12 15:34:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:52,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:52,282 INFO L87 Difference]: Start difference. First operand 125 states and 155 transitions. Second operand 13 states. [2020-10-12 15:34:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:53,265 INFO L93 Difference]: Finished difference Result 209 states and 254 transitions. [2020-10-12 15:34:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:34:53,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-12 15:34:53,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:53,267 INFO L225 Difference]: With dead ends: 209 [2020-10-12 15:34:53,268 INFO L226 Difference]: Without dead ends: 192 [2020-10-12 15:34:53,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:34:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-12 15:34:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 126. [2020-10-12 15:34:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-12 15:34:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 157 transitions. [2020-10-12 15:34:53,284 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 157 transitions. Word has length 39 [2020-10-12 15:34:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:53,285 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 157 transitions. [2020-10-12 15:34:53,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:34:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 157 transitions. [2020-10-12 15:34:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:34:53,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:53,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:53,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:34:53,286 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1531737309, now seen corresponding path program 4 times [2020-10-12 15:34:53,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:53,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458759496] [2020-10-12 15:34:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:34:54,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:54,549 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-12 15:34:54,675 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-12 15:34:55,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:55,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:55,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:55,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:55,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:55,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458759496] [2020-10-12 15:34:55,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:55,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:55,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771169836] [2020-10-12 15:34:55,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:55,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:55,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:55,195 INFO L87 Difference]: Start difference. First operand 126 states and 157 transitions. Second operand 12 states. [2020-10-12 15:34:55,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:55,965 INFO L93 Difference]: Finished difference Result 194 states and 242 transitions. [2020-10-12 15:34:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:34:55,966 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-12 15:34:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:55,967 INFO L225 Difference]: With dead ends: 194 [2020-10-12 15:34:55,967 INFO L226 Difference]: Without dead ends: 192 [2020-10-12 15:34:55,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-12 15:34:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2020-10-12 15:34:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-12 15:34:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2020-10-12 15:34:55,986 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 39 [2020-10-12 15:34:55,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:55,986 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2020-10-12 15:34:55,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2020-10-12 15:34:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:34:55,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:55,987 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:55,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:34:55,988 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:55,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2002388234, now seen corresponding path program 5 times [2020-10-12 15:34:55,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:55,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392175128] [2020-10-12 15:34:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:57,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:34:57,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-12 15:34:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:34:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:57,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:57,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392175128] [2020-10-12 15:34:57,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:57,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:57,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591384977] [2020-10-12 15:34:57,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:57,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:57,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:57,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:57,764 INFO L87 Difference]: Start difference. First operand 139 states and 175 transitions. Second operand 12 states. [2020-10-12 15:34:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:58,593 INFO L93 Difference]: Finished difference Result 188 states and 235 transitions. [2020-10-12 15:34:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:58,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-12 15:34:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:58,595 INFO L225 Difference]: With dead ends: 188 [2020-10-12 15:34:58,595 INFO L226 Difference]: Without dead ends: 186 [2020-10-12 15:34:58,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-12 15:34:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 131. [2020-10-12 15:34:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-12 15:34:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2020-10-12 15:34:58,613 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 40 [2020-10-12 15:34:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:58,614 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2020-10-12 15:34:58,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2020-10-12 15:34:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:34:58,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:58,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:58,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:34:58,615 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash -541234437, now seen corresponding path program 1 times [2020-10-12 15:34:58,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:58,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376392669] [2020-10-12 15:34:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:58,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:35:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:04,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376392669] [2020-10-12 15:35:04,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:04,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:04,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361545665] [2020-10-12 15:35:04,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:04,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:04,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:04,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:04,005 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand 13 states. [2020-10-12 15:35:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:04,684 INFO L93 Difference]: Finished difference Result 184 states and 225 transitions. [2020-10-12 15:35:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:04,684 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 15:35:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:04,686 INFO L225 Difference]: With dead ends: 184 [2020-10-12 15:35:04,686 INFO L226 Difference]: Without dead ends: 174 [2020-10-12 15:35:04,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:35:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-12 15:35:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2020-10-12 15:35:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-12 15:35:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2020-10-12 15:35:04,706 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 40 [2020-10-12 15:35:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:04,706 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2020-10-12 15:35:04,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2020-10-12 15:35:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:35:04,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:04,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:04,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:35:04,708 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash -934261447, now seen corresponding path program 1 times [2020-10-12 15:35:04,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:04,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491297889] [2020-10-12 15:35:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:35:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:35:05,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:05,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491297889] [2020-10-12 15:35:05,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:05,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:05,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217205073] [2020-10-12 15:35:05,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:05,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:05,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:05,588 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand 11 states. [2020-10-12 15:35:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:06,188 INFO L93 Difference]: Finished difference Result 178 states and 218 transitions. [2020-10-12 15:35:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:35:06,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-12 15:35:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:06,191 INFO L225 Difference]: With dead ends: 178 [2020-10-12 15:35:06,191 INFO L226 Difference]: Without dead ends: 176 [2020-10-12 15:35:06,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-12 15:35:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 139. [2020-10-12 15:35:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-12 15:35:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2020-10-12 15:35:06,208 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 40 [2020-10-12 15:35:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:06,208 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2020-10-12 15:35:06,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2020-10-12 15:35:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:35:06,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:06,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:06,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:35:06,209 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash -866580041, now seen corresponding path program 1 times [2020-10-12 15:35:06,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:06,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513700151] [2020-10-12 15:35:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:35:07,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-12 15:35:07,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 15:35:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:07,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:07,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513700151] [2020-10-12 15:35:07,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:07,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:07,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704848304] [2020-10-12 15:35:07,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:07,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:07,954 INFO L87 Difference]: Start difference. First operand 139 states and 175 transitions. Second operand 13 states. [2020-10-12 15:35:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:08,907 INFO L93 Difference]: Finished difference Result 221 states and 273 transitions. [2020-10-12 15:35:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:08,908 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-12 15:35:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:08,910 INFO L225 Difference]: With dead ends: 221 [2020-10-12 15:35:08,910 INFO L226 Difference]: Without dead ends: 219 [2020-10-12 15:35:08,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:35:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-12 15:35:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-12 15:35:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 15:35:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 185 transitions. [2020-10-12 15:35:08,929 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 185 transitions. Word has length 41 [2020-10-12 15:35:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:08,930 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 185 transitions. [2020-10-12 15:35:08,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 185 transitions. [2020-10-12 15:35:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:35:08,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:08,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:08,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:35:08,931 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -412206035, now seen corresponding path program 2 times [2020-10-12 15:35:08,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:08,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357507395] [2020-10-12 15:35:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:35:09,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-12 15:35:09,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 15:35:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:10,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:10,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:10,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357507395] [2020-10-12 15:35:10,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:10,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:10,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107047758] [2020-10-12 15:35:10,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:10,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:10,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:10,123 INFO L87 Difference]: Start difference. First operand 147 states and 185 transitions. Second operand 13 states. [2020-10-12 15:35:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:10,976 INFO L93 Difference]: Finished difference Result 203 states and 250 transitions. [2020-10-12 15:35:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:35:10,976 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-12 15:35:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:10,978 INFO L225 Difference]: With dead ends: 203 [2020-10-12 15:35:10,978 INFO L226 Difference]: Without dead ends: 201 [2020-10-12 15:35:10,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-12 15:35:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2020-10-12 15:35:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-12 15:35:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 167 transitions. [2020-10-12 15:35:10,994 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 167 transitions. Word has length 41 [2020-10-12 15:35:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:10,994 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 167 transitions. [2020-10-12 15:35:10,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 167 transitions. [2020-10-12 15:35:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:35:10,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:10,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:10,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:35:10,995 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:10,996 INFO L82 PathProgramCache]: Analyzing trace with hash 784929901, now seen corresponding path program 2 times [2020-10-12 15:35:10,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:10,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768601649] [2020-10-12 15:35:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:35:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:35:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:35:16,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:35:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 15:35:16,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768601649] [2020-10-12 15:35:16,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:16,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:16,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635970532] [2020-10-12 15:35:16,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:16,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:16,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:16,209 INFO L87 Difference]: Start difference. First operand 134 states and 167 transitions. Second operand 11 states. [2020-10-12 15:35:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:16,677 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2020-10-12 15:35:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:35:16,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-12 15:35:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:16,679 INFO L225 Difference]: With dead ends: 166 [2020-10-12 15:35:16,679 INFO L226 Difference]: Without dead ends: 149 [2020-10-12 15:35:16,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-12 15:35:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-12 15:35:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-12 15:35:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2020-10-12 15:35:16,694 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 41 [2020-10-12 15:35:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:16,694 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2020-10-12 15:35:16,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2020-10-12 15:35:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:35:16,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:16,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:16,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:35:16,695 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash -803418001, now seen corresponding path program 3 times [2020-10-12 15:35:16,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:16,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60914962] [2020-10-12 15:35:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:18,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:18,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:35:18,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:35:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-12 15:35:18,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 15:35:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:18,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:18,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:18,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:18,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:18,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:18,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60914962] [2020-10-12 15:35:18,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:18,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:35:18,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161256870] [2020-10-12 15:35:18,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:35:18,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:18,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:35:18,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:18,782 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand 12 states. [2020-10-12 15:35:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:19,394 INFO L93 Difference]: Finished difference Result 214 states and 254 transitions. [2020-10-12 15:35:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:35:19,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-12 15:35:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:19,396 INFO L225 Difference]: With dead ends: 214 [2020-10-12 15:35:19,396 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 15:35:19,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 15:35:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2020-10-12 15:35:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-12 15:35:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-10-12 15:35:19,412 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 41 [2020-10-12 15:35:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:19,412 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-10-12 15:35:19,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:35:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-10-12 15:35:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:35:19,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:19,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:19,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:35:19,413 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1580981547, now seen corresponding path program 2 times [2020-10-12 15:35:19,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:19,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899891848] [2020-10-12 15:35:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:19,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:35:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:20,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:20,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:20,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899891848] [2020-10-12 15:35:20,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:20,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:20,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870978179] [2020-10-12 15:35:20,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:20,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:20,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:20,526 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 11 states. [2020-10-12 15:35:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:20,986 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-10-12 15:35:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:35:20,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-12 15:35:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:20,987 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:35:20,988 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 15:35:20,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 15:35:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2020-10-12 15:35:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 15:35:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2020-10-12 15:35:21,000 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 43 [2020-10-12 15:35:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:21,001 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2020-10-12 15:35:21,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2020-10-12 15:35:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:35:21,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:21,002 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:21,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:35:21,002 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:21,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1665990742, now seen corresponding path program 1 times [2020-10-12 15:35:21,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:21,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111475243] [2020-10-12 15:35:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:23,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:35:23,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:35:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2508 [2020-10-12 15:35:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:35:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:23,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:23,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:23,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:23,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:23,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111475243] [2020-10-12 15:35:23,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:23,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:35:23,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606085343] [2020-10-12 15:35:23,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:35:23,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:23,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:35:23,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:23,987 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand 12 states. [2020-10-12 15:35:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:24,721 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2020-10-12 15:35:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:35:24,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-12 15:35:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:24,724 INFO L225 Difference]: With dead ends: 128 [2020-10-12 15:35:24,724 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 15:35:24,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 15:35:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2020-10-12 15:35:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 15:35:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2020-10-12 15:35:24,740 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 43 [2020-10-12 15:35:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:24,741 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2020-10-12 15:35:24,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:35:24,741 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2020-10-12 15:35:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:35:24,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:24,741 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:24,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:35:24,742 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -540669271, now seen corresponding path program 2 times [2020-10-12 15:35:24,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:24,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935547610] [2020-10-12 15:35:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:35:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:35:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3983 [2020-10-12 15:35:28,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:35:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:29,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935547610] [2020-10-12 15:35:29,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:29,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:29,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753919542] [2020-10-12 15:35:29,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:29,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:29,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:29,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:29,138 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand 13 states. [2020-10-12 15:35:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:29,709 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2020-10-12 15:35:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:29,709 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-12 15:35:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:29,710 INFO L225 Difference]: With dead ends: 142 [2020-10-12 15:35:29,711 INFO L226 Difference]: Without dead ends: 140 [2020-10-12 15:35:29,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-12 15:35:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 107. [2020-10-12 15:35:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 15:35:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2020-10-12 15:35:29,726 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 44 [2020-10-12 15:35:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:29,726 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2020-10-12 15:35:29,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2020-10-12 15:35:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:35:29,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:29,727 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:29,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:35:29,728 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:29,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:29,728 INFO L82 PathProgramCache]: Analyzing trace with hash -443562275, now seen corresponding path program 2 times [2020-10-12 15:35:29,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:29,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088122391] [2020-10-12 15:35:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2136 [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:35:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:32,262 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-12 15:35:32,401 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-12 15:35:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:32,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:32,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:32,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:32,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088122391] [2020-10-12 15:35:32,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:32,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:32,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63726642] [2020-10-12 15:35:32,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:32,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:32,578 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand 13 states. [2020-10-12 15:35:32,991 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-12 15:35:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:33,569 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2020-10-12 15:35:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:33,570 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-12 15:35:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:33,571 INFO L225 Difference]: With dead ends: 164 [2020-10-12 15:35:33,572 INFO L226 Difference]: Without dead ends: 162 [2020-10-12 15:35:33,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:35:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-12 15:35:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 115. [2020-10-12 15:35:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-12 15:35:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2020-10-12 15:35:33,590 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 45 [2020-10-12 15:35:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:33,591 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2020-10-12 15:35:33,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2020-10-12 15:35:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:35:33,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:33,592 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:33,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:35:33,592 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash -550965034, now seen corresponding path program 1 times [2020-10-12 15:35:33,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:33,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522746363] [2020-10-12 15:35:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:36,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2965 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:35:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:37,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:37,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:37,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522746363] [2020-10-12 15:35:37,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:37,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:37,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083651791] [2020-10-12 15:35:37,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:37,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:37,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:37,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:37,083 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand 13 states. [2020-10-12 15:35:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:37,698 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2020-10-12 15:35:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:37,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-12 15:35:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:37,700 INFO L225 Difference]: With dead ends: 143 [2020-10-12 15:35:37,700 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 15:35:37,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 15:35:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-10-12 15:35:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-12 15:35:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2020-10-12 15:35:37,719 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 45 [2020-10-12 15:35:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:37,719 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2020-10-12 15:35:37,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2020-10-12 15:35:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:35:37,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:37,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:37,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:35:37,721 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1331035100, now seen corresponding path program 2 times [2020-10-12 15:35:37,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:37,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627317102] [2020-10-12 15:35:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:40,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:40,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3209 [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:35:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:41,406 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-10-12 15:35:41,558 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-12 15:35:41,719 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-12 15:35:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:41,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627317102] [2020-10-12 15:35:41,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:41,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:41,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999539579] [2020-10-12 15:35:41,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:41,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:41,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:41,941 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand 14 states. [2020-10-12 15:35:42,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:42,816 INFO L93 Difference]: Finished difference Result 196 states and 235 transitions. [2020-10-12 15:35:42,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:35:42,817 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-12 15:35:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:42,818 INFO L225 Difference]: With dead ends: 196 [2020-10-12 15:35:42,819 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 15:35:42,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:35:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 15:35:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 123. [2020-10-12 15:35:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-12 15:35:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2020-10-12 15:35:42,836 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 46 [2020-10-12 15:35:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:42,836 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2020-10-12 15:35:42,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2020-10-12 15:35:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:35:42,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:42,837 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:42,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:35:42,837 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1846355482, now seen corresponding path program 3 times [2020-10-12 15:35:42,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:42,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717251687] [2020-10-12 15:35:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:35:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:35:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:48,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:48,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:48,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:48,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:48,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717251687] [2020-10-12 15:35:48,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:48,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:35:48,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860758796] [2020-10-12 15:35:48,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:35:48,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:48,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:35:48,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:48,397 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand 15 states. [2020-10-12 15:35:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:49,398 INFO L93 Difference]: Finished difference Result 186 states and 221 transitions. [2020-10-12 15:35:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:35:49,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-10-12 15:35:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:49,400 INFO L225 Difference]: With dead ends: 186 [2020-10-12 15:35:49,400 INFO L226 Difference]: Without dead ends: 176 [2020-10-12 15:35:49,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:35:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-12 15:35:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 142. [2020-10-12 15:35:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 15:35:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2020-10-12 15:35:49,426 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 46 [2020-10-12 15:35:49,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:49,429 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2020-10-12 15:35:49,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:35:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2020-10-12 15:35:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:35:49,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:49,430 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:49,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 15:35:49,430 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2055584804, now seen corresponding path program 2 times [2020-10-12 15:35:49,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:49,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308991878] [2020-10-12 15:35:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:50,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:35:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:51,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:51,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:51,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:51,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:51,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308991878] [2020-10-12 15:35:51,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:51,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:51,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416207596] [2020-10-12 15:35:51,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:51,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:51,342 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand 13 states. [2020-10-12 15:35:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:52,225 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2020-10-12 15:35:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:52,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-12 15:35:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:52,227 INFO L225 Difference]: With dead ends: 167 [2020-10-12 15:35:52,227 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 15:35:52,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:35:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 15:35:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-10-12 15:35:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-12 15:35:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2020-10-12 15:35:52,244 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 46 [2020-10-12 15:35:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:52,244 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2020-10-12 15:35:52,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2020-10-12 15:35:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 15:35:52,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:52,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:52,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 15:35:52,246 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash -321215080, now seen corresponding path program 4 times [2020-10-12 15:35:52,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:52,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985909122] [2020-10-12 15:35:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:57,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:57,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:35:57,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 15:35:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 15:35:57,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:35:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:57,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985909122] [2020-10-12 15:35:57,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:57,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:57,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945870841] [2020-10-12 15:35:57,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:57,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:57,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:57,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:57,587 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand 13 states. [2020-10-12 15:35:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:58,195 INFO L93 Difference]: Finished difference Result 177 states and 212 transitions. [2020-10-12 15:35:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:35:58,196 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-10-12 15:35:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:58,197 INFO L225 Difference]: With dead ends: 177 [2020-10-12 15:35:58,197 INFO L226 Difference]: Without dead ends: 160 [2020-10-12 15:35:58,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:35:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-12 15:35:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2020-10-12 15:35:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 15:35:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 189 transitions. [2020-10-12 15:35:58,217 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 189 transitions. Word has length 47 [2020-10-12 15:35:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:58,218 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 189 transitions. [2020-10-12 15:35:58,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 189 transitions. [2020-10-12 15:35:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 15:35:58,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:58,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:58,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 15:35:58,218 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:58,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1992377304, now seen corresponding path program 3 times [2020-10-12 15:35:58,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:58,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522290865] [2020-10-12 15:35:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:35:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:58,834 ERROR L253 erpolLogProxyWrapper]: Interpolant 41 not inductive [2020-10-12 15:35:58,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 15:35:58,836 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-12 15:35:58,840 INFO L168 Benchmark]: Toolchain (without parser) took 107118.20 ms. Allocated memory was 146.8 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 101.5 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-12 15:35:58,841 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-12 15:35:58,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.68 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 171.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:58,842 INFO L168 Benchmark]: Boogie Preprocessor took 78.07 ms. Allocated memory is still 203.9 MB. Free memory was 171.0 MB in the beginning and 167.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:58,842 INFO L168 Benchmark]: RCFGBuilder took 604.41 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 121.9 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:35:58,842 INFO L168 Benchmark]: TraceAbstraction took 105841.06 ms. Allocated memory was 203.9 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 121.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-12 15:35:58,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.68 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 171.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.07 ms. Allocated memory is still 203.9 MB. Free memory was 171.0 MB in the beginning and 167.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 604.41 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 121.9 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 105841.06 ms. Allocated memory was 203.9 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 121.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...