/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:16:17,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:16:17,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:16:17,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:16:17,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:16:17,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:16:17,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:16:17,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:16:17,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:16:17,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:16:17,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:16:17,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:16:17,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:16:17,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:16:17,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:16:17,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:16:17,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:16:17,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:16:17,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:16:17,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:16:17,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:16:17,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:16:17,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:16:17,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:16:17,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:16:17,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:16:17,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:16:17,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:16:17,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:16:17,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:16:17,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:16:17,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:16:17,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:16:17,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:16:17,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:16:17,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:16:17,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:16:17,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:16:17,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:16:17,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:16:17,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:16:17,511 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 [2020-10-15 00:16:17,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:16:17,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:16:17,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:16:17,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:16:17,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:16:17,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:16:17,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:16:17,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:16:17,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:16:17,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:16:17,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:16:17,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:16:17,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:16:17,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:16:17,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:16:17,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:16:17,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:16:17,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:16:17,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:16:17,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:16:17,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:16:17,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:16:17,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:16:17,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:16:17,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:16:17,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:16:17,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:16:17,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:16:17,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:16:17,560 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:16:17,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:16:17,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:16:17,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:16:17,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:16:17,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:16:17,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2020-10-15 00:16:17,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72e9a6162/c10f42ac0f9b47469889383a8c357aa6/FLAG746942f8b [2020-10-15 00:16:18,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:16:18,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2020-10-15 00:16:18,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72e9a6162/c10f42ac0f9b47469889383a8c357aa6/FLAG746942f8b [2020-10-15 00:16:18,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72e9a6162/c10f42ac0f9b47469889383a8c357aa6 [2020-10-15 00:16:18,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:16:18,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:16:18,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:16:18,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:16:18,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:16:18,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:16:18" (1/1) ... [2020-10-15 00:16:18,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b249407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:18, skipping insertion in model container [2020-10-15 00:16:18,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:16:18" (1/1) ... [2020-10-15 00:16:18,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:16:18,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:16:19,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:16:19,468 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:16:19,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:16:19,653 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:16:19,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19 WrapperNode [2020-10-15 00:16:19,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:16:19,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:16:19,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:16:19,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:16:19,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (1/1) ... [2020-10-15 00:16:19,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:16:19,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:16:19,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:16:19,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:16:19,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (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 [2020-10-15 00:16:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:16:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:16:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-15 00:16:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-15 00:16:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-15 00:16:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-15 00:16:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-15 00:16:19,871 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-15 00:16:19,871 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-15 00:16:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-15 00:16:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-15 00:16:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-15 00:16:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-15 00:16:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-15 00:16:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-15 00:16:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-15 00:16:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-15 00:16:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-15 00:16:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-15 00:16:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-15 00:16:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-15 00:16:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-15 00:16:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:16:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-15 00:16:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-15 00:16:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-15 00:16:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-15 00:16:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-15 00:16:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-15 00:16:19,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-15 00:16:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:16:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-15 00:16:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-15 00:16:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-15 00:16:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-15 00:16:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-15 00:16:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-15 00:16:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-15 00:16:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-15 00:16:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-15 00:16:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-15 00:16:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-15 00:16:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-15 00:16:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-15 00:16:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-15 00:16:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-15 00:16:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-15 00:16:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-15 00:16:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-15 00:16:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-15 00:16:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-15 00:16:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-15 00:16:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-15 00:16:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-15 00:16:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:16:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-15 00:16:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:16:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:16:20,455 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:20,554 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-15 00:16:20,555 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-15 00:16:20,562 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:20,611 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-15 00:16:20,611 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-15 00:16:20,639 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:20,662 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-15 00:16:20,662 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-15 00:16:20,773 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:20,817 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-15 00:16:20,817 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-15 00:16:20,818 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint L303: #res := 0; [2020-10-15 00:16:20,826 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:20,973 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-15 00:16:20,973 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-15 00:16:20,974 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:21,009 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-15 00:16:21,009 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-15 00:16:21,041 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:21,061 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-15 00:16:21,061 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-15 00:16:21,065 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:21,256 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-15 00:16:21,257 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-15 00:16:21,271 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:21,277 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:21,277 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:21,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:16:21,306 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:16:21,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:16:21 BoogieIcfgContainer [2020-10-15 00:16:21,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:16:21,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:16:21,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:16:21,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:16:21,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:16:18" (1/3) ... [2020-10-15 00:16:21,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff9aeb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:16:21, skipping insertion in model container [2020-10-15 00:16:21,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:19" (2/3) ... [2020-10-15 00:16:21,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff9aeb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:16:21, skipping insertion in model container [2020-10-15 00:16:21,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:16:21" (3/3) ... [2020-10-15 00:16:21,323 INFO L109 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.c [2020-10-15 00:16:21,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:16:21,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:16:21,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:16:21,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:16:21,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:16:21,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:16:21,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:16:21,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:16:21,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:16:21,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:16:21,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:16:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states. [2020-10-15 00:16:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:16:21,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:21,427 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] [2020-10-15 00:16:21,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:21,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1001295975, now seen corresponding path program 1 times [2020-10-15 00:16:21,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:21,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214180801] [2020-10-15 00:16:21,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:21,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:21,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:16:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-15 00:16:21,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:21,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:16:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:16:22,184 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-15 00:16:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:22,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:22,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:22,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:16:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:22,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:22,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:22,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 00:16:22,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:22,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:22,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214180801] [2020-10-15 00:16:22,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:22,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:16:22,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777877248] [2020-10-15 00:16:22,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:16:22,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:16:22,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:16:22,336 INFO L87 Difference]: Start difference. First operand 515 states. Second operand 5 states. [2020-10-15 00:16:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:25,424 INFO L93 Difference]: Finished difference Result 1043 states and 1675 transitions. [2020-10-15 00:16:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:25,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:16:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:25,469 INFO L225 Difference]: With dead ends: 1043 [2020-10-15 00:16:25,469 INFO L226 Difference]: Without dead ends: 663 [2020-10-15 00:16:25,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-15 00:16:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2020-10-15 00:16:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-15 00:16:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2020-10-15 00:16:25,652 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2020-10-15 00:16:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:25,653 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2020-10-15 00:16:25,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:16:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2020-10-15 00:16:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:16:25,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:25,655 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, 1, 1, 1, 1, 1] [2020-10-15 00:16:25,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:16:25,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1234723898, now seen corresponding path program 1 times [2020-10-15 00:16:25,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:25,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266528029] [2020-10-15 00:16:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:25,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:16:25,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-15 00:16:25,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:25,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:16:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:16:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:26,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:26,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:26,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:26,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:26,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:26,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:26,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:26,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:26,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:26,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:26,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:26,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:26,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:26,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:26,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266528029] [2020-10-15 00:16:26,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:26,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:26,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783660280] [2020-10-15 00:16:26,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:26,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:26,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:26,127 INFO L87 Difference]: Start difference. First operand 507 states and 737 transitions. Second operand 6 states. [2020-10-15 00:16:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:29,634 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2020-10-15 00:16:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:29,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-15 00:16:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:29,643 INFO L225 Difference]: With dead ends: 961 [2020-10-15 00:16:29,643 INFO L226 Difference]: Without dead ends: 842 [2020-10-15 00:16:29,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-15 00:16:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2020-10-15 00:16:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-15 00:16:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2020-10-15 00:16:29,766 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2020-10-15 00:16:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:29,767 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2020-10-15 00:16:29,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2020-10-15 00:16:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:16:29,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:29,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:29,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:16:29,778 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:29,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:29,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1338407833, now seen corresponding path program 1 times [2020-10-15 00:16:29,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:29,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686098327] [2020-10-15 00:16:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:30,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:16:30,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-15 00:16:30,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:30,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:16:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:16:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:16:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:30,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:30,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:30,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:30,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:30,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:30,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:30,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:30,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:30,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:30,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:16:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:30,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:30,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686098327] [2020-10-15 00:16:30,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:30,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:30,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816815299] [2020-10-15 00:16:30,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:30,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:30,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:30,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:30,399 INFO L87 Difference]: Start difference. First operand 662 states and 961 transitions. Second operand 6 states. [2020-10-15 00:16:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:33,255 INFO L93 Difference]: Finished difference Result 1142 states and 1641 transitions. [2020-10-15 00:16:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:33,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-15 00:16:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:33,263 INFO L225 Difference]: With dead ends: 1142 [2020-10-15 00:16:33,263 INFO L226 Difference]: Without dead ends: 966 [2020-10-15 00:16:33,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-15 00:16:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2020-10-15 00:16:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-10-15 00:16:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2020-10-15 00:16:33,331 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2020-10-15 00:16:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:33,331 INFO L479 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2020-10-15 00:16:33,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2020-10-15 00:16:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:16:33,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:33,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:33,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:16:33,334 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:33,335 INFO L82 PathProgramCache]: Analyzing trace with hash 817062638, now seen corresponding path program 1 times [2020-10-15 00:16:33,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:33,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495670473] [2020-10-15 00:16:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:33,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:33,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:16:33,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-15 00:16:33,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:33,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:16:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:16:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:16:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:33,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:33,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:33,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:33,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:33,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:16:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:33,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:33,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:33,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:33,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:33,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:33,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:33,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495670473] [2020-10-15 00:16:33,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:33,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:16:33,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907031227] [2020-10-15 00:16:33,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:16:33,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:33,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:16:33,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:33,999 INFO L87 Difference]: Start difference. First operand 787 states and 1132 transitions. Second operand 8 states. [2020-10-15 00:16:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:37,012 INFO L93 Difference]: Finished difference Result 1616 states and 2400 transitions. [2020-10-15 00:16:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:16:37,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-15 00:16:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:37,022 INFO L225 Difference]: With dead ends: 1616 [2020-10-15 00:16:37,022 INFO L226 Difference]: Without dead ends: 1052 [2020-10-15 00:16:37,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:16:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-15 00:16:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 833. [2020-10-15 00:16:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-15 00:16:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2020-10-15 00:16:37,110 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 31 [2020-10-15 00:16:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:37,110 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2020-10-15 00:16:37,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:16:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2020-10-15 00:16:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:16:37,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:37,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:37,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:16:37,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash 891535335, now seen corresponding path program 1 times [2020-10-15 00:16:37,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:37,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954965201] [2020-10-15 00:16:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:37,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:37,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:16:37,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-15 00:16:37,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:37,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:16:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:16:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:37,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:37,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:37,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:37,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:37,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:37,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:37,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:37,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:37,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:37,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:37,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:37,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:37,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:37,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:37,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954965201] [2020-10-15 00:16:37,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:37,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:37,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089576848] [2020-10-15 00:16:37,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:37,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:37,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:37,565 INFO L87 Difference]: Start difference. First operand 833 states and 1200 transitions. Second operand 6 states. [2020-10-15 00:16:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:39,901 INFO L93 Difference]: Finished difference Result 963 states and 1422 transitions. [2020-10-15 00:16:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:39,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-15 00:16:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:39,908 INFO L225 Difference]: With dead ends: 963 [2020-10-15 00:16:39,909 INFO L226 Difference]: Without dead ends: 959 [2020-10-15 00:16:39,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:16:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-15 00:16:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2020-10-15 00:16:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-15 00:16:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2020-10-15 00:16:39,978 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2020-10-15 00:16:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:39,980 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2020-10-15 00:16:39,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2020-10-15 00:16:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:16:39,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:39,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:39,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:16:39,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:39,985 INFO L82 PathProgramCache]: Analyzing trace with hash 975145180, now seen corresponding path program 1 times [2020-10-15 00:16:39,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:39,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573546611] [2020-10-15 00:16:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:16:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-15 00:16:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:16:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:16:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:16:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:40,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:40,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:40,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:40,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:40,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:40,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:40,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573546611] [2020-10-15 00:16:40,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:40,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:40,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260739450] [2020-10-15 00:16:40,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:40,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:40,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:40,961 INFO L87 Difference]: Start difference. First operand 832 states and 1197 transitions. Second operand 6 states. [2020-10-15 00:16:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:43,502 INFO L93 Difference]: Finished difference Result 1227 states and 1782 transitions. [2020-10-15 00:16:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:43,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-15 00:16:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:43,511 INFO L225 Difference]: With dead ends: 1227 [2020-10-15 00:16:43,511 INFO L226 Difference]: Without dead ends: 1209 [2020-10-15 00:16:43,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-15 00:16:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1027. [2020-10-15 00:16:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-15 00:16:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1470 transitions. [2020-10-15 00:16:43,591 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1470 transitions. Word has length 39 [2020-10-15 00:16:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:43,591 INFO L479 AbstractCegarLoop]: Abstraction has 1027 states and 1470 transitions. [2020-10-15 00:16:43,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1470 transitions. [2020-10-15 00:16:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:16:43,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:43,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:43,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:16:43,595 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:43,596 INFO L82 PathProgramCache]: Analyzing trace with hash -18672278, now seen corresponding path program 1 times [2020-10-15 00:16:43,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:43,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103116182] [2020-10-15 00:16:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:43,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:43,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:16:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-15 00:16:43,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:43,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:16:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:16:43,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:43,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:43,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:43,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:43,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:43,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:43,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:43,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:43,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:43,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:43,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:43,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:43,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:43,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-15 00:16:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:43,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:43,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:43,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:16:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:43,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103116182] [2020-10-15 00:16:43,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:43,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:16:43,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438625864] [2020-10-15 00:16:43,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:16:43,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:43,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:16:43,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:16:43,973 INFO L87 Difference]: Start difference. First operand 1027 states and 1470 transitions. Second operand 7 states. [2020-10-15 00:16:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:47,277 INFO L93 Difference]: Finished difference Result 1489 states and 2135 transitions. [2020-10-15 00:16:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:16:47,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-15 00:16:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:47,293 INFO L225 Difference]: With dead ends: 1489 [2020-10-15 00:16:47,293 INFO L226 Difference]: Without dead ends: 1419 [2020-10-15 00:16:47,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:16:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-15 00:16:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1145. [2020-10-15 00:16:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2020-10-15 00:16:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1618 transitions. [2020-10-15 00:16:47,440 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1618 transitions. Word has length 47 [2020-10-15 00:16:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:47,440 INFO L479 AbstractCegarLoop]: Abstraction has 1145 states and 1618 transitions. [2020-10-15 00:16:47,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:16:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1618 transitions. [2020-10-15 00:16:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:16:47,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:47,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:47,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:16:47,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:47,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1915119306, now seen corresponding path program 1 times [2020-10-15 00:16:47,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:47,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771581185] [2020-10-15 00:16:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:47,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:16:47,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:47,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-15 00:16:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:16:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:16:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:47,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:47,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:47,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:47,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:47,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:47,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:47,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:16:47,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:47,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:48,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:48,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:16:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:48,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:16:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:48,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771581185] [2020-10-15 00:16:48,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:48,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:16:48,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928081672] [2020-10-15 00:16:48,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:16:48,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:48,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:16:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:16:48,063 INFO L87 Difference]: Start difference. First operand 1145 states and 1618 transitions. Second operand 7 states. [2020-10-15 00:16:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:51,703 INFO L93 Difference]: Finished difference Result 1617 states and 2321 transitions. [2020-10-15 00:16:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:16:51,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-15 00:16:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:51,714 INFO L225 Difference]: With dead ends: 1617 [2020-10-15 00:16:51,714 INFO L226 Difference]: Without dead ends: 1014 [2020-10-15 00:16:51,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:16:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-15 00:16:51,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 865. [2020-10-15 00:16:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-10-15 00:16:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1214 transitions. [2020-10-15 00:16:51,838 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1214 transitions. Word has length 46 [2020-10-15 00:16:51,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:51,838 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1214 transitions. [2020-10-15 00:16:51,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:16:51,839 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1214 transitions. [2020-10-15 00:16:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:16:51,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:51,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:51,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:16:51,842 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2102488102, now seen corresponding path program 1 times [2020-10-15 00:16:51,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:51,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449617823] [2020-10-15 00:16:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:16:52,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:16:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-15 00:16:52,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:16:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:52,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:52,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:52,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:16:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:52,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:16:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:16:52,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:16:52,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:16:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:52,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449617823] [2020-10-15 00:16:52,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:52,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:16:52,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530915414] [2020-10-15 00:16:52,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:16:52,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:16:52,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:16:52,682 INFO L87 Difference]: Start difference. First operand 865 states and 1214 transitions. Second operand 9 states. [2020-10-15 00:16:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:58,590 INFO L93 Difference]: Finished difference Result 1717 states and 2519 transitions. [2020-10-15 00:16:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:16:58,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-15 00:16:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:58,607 INFO L225 Difference]: With dead ends: 1717 [2020-10-15 00:16:58,608 INFO L226 Difference]: Without dead ends: 1463 [2020-10-15 00:16:58,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:16:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-15 00:16:58,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 950. [2020-10-15 00:16:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-10-15 00:16:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1310 transitions. [2020-10-15 00:16:58,701 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1310 transitions. Word has length 47 [2020-10-15 00:16:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:58,702 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1310 transitions. [2020-10-15 00:16:58,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:16:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1310 transitions. [2020-10-15 00:16:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:16:58,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:58,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:58,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:16:58,706 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1231494309, now seen corresponding path program 1 times [2020-10-15 00:16:58,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:58,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733180161] [2020-10-15 00:16:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:59,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:16:59,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:16:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-15 00:16:59,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:59,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:16:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:16:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:59,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:59,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:59,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:59,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:59,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:59,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:59,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:59,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:59,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:59,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:59,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:59,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:16:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:00,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:00,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:17:00,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:17:00,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-15 00:17:00,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:00,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 00:17:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:00,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:17:00,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:17:00,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:00,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-15 00:17:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:00,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:00,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:17:00,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:17:00,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:00,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:17:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:00,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733180161] [2020-10-15 00:17:00,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:00,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:00,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064999889] [2020-10-15 00:17:00,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:00,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:00,333 INFO L87 Difference]: Start difference. First operand 950 states and 1310 transitions. Second operand 9 states. [2020-10-15 00:17:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:04,550 INFO L93 Difference]: Finished difference Result 1221 states and 1713 transitions. [2020-10-15 00:17:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:17:04,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 00:17:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:04,556 INFO L225 Difference]: With dead ends: 1221 [2020-10-15 00:17:04,557 INFO L226 Difference]: Without dead ends: 1016 [2020-10-15 00:17:04,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-10-15 00:17:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 846. [2020-10-15 00:17:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-15 00:17:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1164 transitions. [2020-10-15 00:17:04,639 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1164 transitions. Word has length 52 [2020-10-15 00:17:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:04,639 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1164 transitions. [2020-10-15 00:17:04,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1164 transitions. [2020-10-15 00:17:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:17:04,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:04,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:04,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:17:04,644 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1451417877, now seen corresponding path program 1 times [2020-10-15 00:17:04,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:04,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594747738] [2020-10-15 00:17:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:05,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:17:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-15 00:17:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:05,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:17:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:05,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:05,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:05,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:05,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:05,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:05,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:05,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:05,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:05,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:05,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:05,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:05,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:17:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 00:17:05,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:05,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:17:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:05,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:05,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:17:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:05,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:05,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594747738] [2020-10-15 00:17:05,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:05,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:05,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971883882] [2020-10-15 00:17:05,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:05,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:05,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:05,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:05,829 INFO L87 Difference]: Start difference. First operand 846 states and 1164 transitions. Second operand 9 states. [2020-10-15 00:17:07,457 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-15 00:17:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:09,754 INFO L93 Difference]: Finished difference Result 1014 states and 1446 transitions. [2020-10-15 00:17:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:09,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-15 00:17:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:09,760 INFO L225 Difference]: With dead ends: 1014 [2020-10-15 00:17:09,760 INFO L226 Difference]: Without dead ends: 1006 [2020-10-15 00:17:09,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-15 00:17:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 846. [2020-10-15 00:17:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-15 00:17:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1163 transitions. [2020-10-15 00:17:09,840 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1163 transitions. Word has length 49 [2020-10-15 00:17:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:09,841 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1163 transitions. [2020-10-15 00:17:09,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1163 transitions. [2020-10-15 00:17:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:17:09,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:09,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:09,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:17:09,845 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:09,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1610365576, now seen corresponding path program 1 times [2020-10-15 00:17:09,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:09,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57869477] [2020-10-15 00:17:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:17:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-15 00:17:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:17:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:10,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:10,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:10,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:10,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:10,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:17:10,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:17:10,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:17:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:17:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:10,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:17:10,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:17:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:10,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57869477] [2020-10-15 00:17:10,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:10,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:10,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874742261] [2020-10-15 00:17:10,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:10,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:10,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:10,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:10,821 INFO L87 Difference]: Start difference. First operand 846 states and 1163 transitions. Second operand 12 states. [2020-10-15 00:17:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:15,268 INFO L93 Difference]: Finished difference Result 1124 states and 1582 transitions. [2020-10-15 00:17:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:15,268 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-15 00:17:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:15,274 INFO L225 Difference]: With dead ends: 1124 [2020-10-15 00:17:15,275 INFO L226 Difference]: Without dead ends: 1065 [2020-10-15 00:17:15,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:17:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-10-15 00:17:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 866. [2020-10-15 00:17:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-10-15 00:17:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1199 transitions. [2020-10-15 00:17:15,358 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1199 transitions. Word has length 50 [2020-10-15 00:17:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:15,358 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1199 transitions. [2020-10-15 00:17:15,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1199 transitions. [2020-10-15 00:17:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:17:15,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:15,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:15,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:17:15,362 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:15,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:15,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1035590368, now seen corresponding path program 1 times [2020-10-15 00:17:15,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:15,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631420891] [2020-10-15 00:17:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:17:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:17:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:17:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:15,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:17:15,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:17:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:15,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:17:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:15,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631420891] [2020-10-15 00:17:15,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:15,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:17:15,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958964193] [2020-10-15 00:17:15,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:17:15,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:15,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:17:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:15,686 INFO L87 Difference]: Start difference. First operand 866 states and 1199 transitions. Second operand 7 states. [2020-10-15 00:17:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:19,289 INFO L93 Difference]: Finished difference Result 1174 states and 1663 transitions. [2020-10-15 00:17:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:17:19,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-15 00:17:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:19,294 INFO L225 Difference]: With dead ends: 1174 [2020-10-15 00:17:19,295 INFO L226 Difference]: Without dead ends: 1163 [2020-10-15 00:17:19,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-10-15 00:17:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 940. [2020-10-15 00:17:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-15 00:17:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1284 transitions. [2020-10-15 00:17:19,382 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1284 transitions. Word has length 50 [2020-10-15 00:17:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:19,382 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1284 transitions. [2020-10-15 00:17:19,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:17:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1284 transitions. [2020-10-15 00:17:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:17:19,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:19,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:19,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:17:19,387 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1411925024, now seen corresponding path program 1 times [2020-10-15 00:17:19,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:19,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229712907] [2020-10-15 00:17:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:17:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-15 00:17:19,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:17:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:19,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:19,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:19,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:20,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:20,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:17:20,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:20,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:17:20,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:17:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:20,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:20,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 00:17:20,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:20,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:17:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:20,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229712907] [2020-10-15 00:17:20,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:20,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:17:20,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845961262] [2020-10-15 00:17:20,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:17:20,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:20,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:17:20,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:20,086 INFO L87 Difference]: Start difference. First operand 940 states and 1284 transitions. Second operand 11 states. [2020-10-15 00:17:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:23,930 INFO L93 Difference]: Finished difference Result 1100 states and 1543 transitions. [2020-10-15 00:17:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:17:23,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-15 00:17:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:23,939 INFO L225 Difference]: With dead ends: 1100 [2020-10-15 00:17:23,939 INFO L226 Difference]: Without dead ends: 1037 [2020-10-15 00:17:23,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-10-15 00:17:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 917. [2020-10-15 00:17:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-10-15 00:17:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1250 transitions. [2020-10-15 00:17:24,025 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1250 transitions. Word has length 50 [2020-10-15 00:17:24,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:24,025 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1250 transitions. [2020-10-15 00:17:24,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:17:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1250 transitions. [2020-10-15 00:17:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:17:24,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:24,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:24,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:17:24,029 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:24,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1728648689, now seen corresponding path program 1 times [2020-10-15 00:17:24,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:24,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265670860] [2020-10-15 00:17:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:17:24,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-15 00:17:24,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 00:17:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:17:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:24,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:24,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:24,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:17:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-15 00:17:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:17:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:17:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:17:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:24,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265670860] [2020-10-15 00:17:24,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:24,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:24,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172727297] [2020-10-15 00:17:24,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:24,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:24,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:24,787 INFO L87 Difference]: Start difference. First operand 917 states and 1250 transitions. Second operand 9 states. [2020-10-15 00:17:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:26,864 INFO L93 Difference]: Finished difference Result 1062 states and 1491 transitions. [2020-10-15 00:17:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:17:26,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 00:17:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:26,871 INFO L225 Difference]: With dead ends: 1062 [2020-10-15 00:17:26,871 INFO L226 Difference]: Without dead ends: 1057 [2020-10-15 00:17:26,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-15 00:17:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 935. [2020-10-15 00:17:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-15 00:17:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1271 transitions. [2020-10-15 00:17:26,972 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1271 transitions. Word has length 52 [2020-10-15 00:17:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:26,973 INFO L479 AbstractCegarLoop]: Abstraction has 935 states and 1271 transitions. [2020-10-15 00:17:26,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1271 transitions. [2020-10-15 00:17:26,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:26,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:26,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:26,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:17:26,976 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2025775123, now seen corresponding path program 1 times [2020-10-15 00:17:26,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:26,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840728299] [2020-10-15 00:17:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:17:27,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-15 00:17:27,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 00:17:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:17:27,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:27,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:27,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:27,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:17:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 00:17:27,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:17:27,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:17:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:17:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:17:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:27,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840728299] [2020-10-15 00:17:27,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:27,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:27,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481639217] [2020-10-15 00:17:27,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:27,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:27,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:27,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:27,715 INFO L87 Difference]: Start difference. First operand 935 states and 1271 transitions. Second operand 12 states. [2020-10-15 00:17:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:35,598 INFO L93 Difference]: Finished difference Result 2127 states and 2978 transitions. [2020-10-15 00:17:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:17:35,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-15 00:17:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:35,605 INFO L225 Difference]: With dead ends: 2127 [2020-10-15 00:17:35,605 INFO L226 Difference]: Without dead ends: 1908 [2020-10-15 00:17:35,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:17:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-15 00:17:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1509. [2020-10-15 00:17:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-10-15 00:17:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2084 transitions. [2020-10-15 00:17:35,760 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2084 transitions. Word has length 54 [2020-10-15 00:17:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:35,760 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 2084 transitions. [2020-10-15 00:17:35,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:35,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2084 transitions. [2020-10-15 00:17:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:17:35,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:35,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:35,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:17:35,766 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash -748190250, now seen corresponding path program 1 times [2020-10-15 00:17:35,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:35,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807749030] [2020-10-15 00:17:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:35,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:17:35,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 00:17:35,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:35,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 00:17:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:35,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:35,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:35,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:35,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:35,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:35,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:35,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:36,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:36,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:17:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:36,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:36,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:36,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:17:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:36,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807749030] [2020-10-15 00:17:36,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:36,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:36,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256207827] [2020-10-15 00:17:36,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:36,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:36,077 INFO L87 Difference]: Start difference. First operand 1509 states and 2084 transitions. Second operand 8 states. [2020-10-15 00:17:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:39,098 INFO L93 Difference]: Finished difference Result 2075 states and 2937 transitions. [2020-10-15 00:17:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:39,099 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 00:17:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:39,108 INFO L225 Difference]: With dead ends: 2075 [2020-10-15 00:17:39,108 INFO L226 Difference]: Without dead ends: 1667 [2020-10-15 00:17:39,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:39,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-10-15 00:17:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1500. [2020-10-15 00:17:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-10-15 00:17:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2068 transitions. [2020-10-15 00:17:39,270 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2068 transitions. Word has length 56 [2020-10-15 00:17:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:39,271 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 2068 transitions. [2020-10-15 00:17:39,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2068 transitions. [2020-10-15 00:17:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:17:39,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:39,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:39,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:17:39,276 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:39,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:39,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1812566224, now seen corresponding path program 1 times [2020-10-15 00:17:39,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:39,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402552877] [2020-10-15 00:17:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:17:39,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-15 00:17:39,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:17:39,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:17:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:39,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:39,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:39,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:17:39,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:17:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:39,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:39,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:39,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402552877] [2020-10-15 00:17:39,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:39,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:39,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484361192] [2020-10-15 00:17:39,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:39,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:39,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:39,747 INFO L87 Difference]: Start difference. First operand 1500 states and 2068 transitions. Second operand 12 states. [2020-10-15 00:17:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:42,939 INFO L93 Difference]: Finished difference Result 1682 states and 2392 transitions. [2020-10-15 00:17:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:42,939 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-15 00:17:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:42,948 INFO L225 Difference]: With dead ends: 1682 [2020-10-15 00:17:42,948 INFO L226 Difference]: Without dead ends: 1678 [2020-10-15 00:17:42,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-10-15 00:17:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1507. [2020-10-15 00:17:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-10-15 00:17:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2077 transitions. [2020-10-15 00:17:43,109 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2077 transitions. Word has length 51 [2020-10-15 00:17:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:43,110 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 2077 transitions. [2020-10-15 00:17:43,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2077 transitions. [2020-10-15 00:17:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:17:43,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:43,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:43,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:17:43,114 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:43,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1812843054, now seen corresponding path program 1 times [2020-10-15 00:17:43,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:43,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206066923] [2020-10-15 00:17:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:17:43,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-15 00:17:43,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:17:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:43,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:43,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 00:17:43,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:17:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:17:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:43,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206066923] [2020-10-15 00:17:43,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:43,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:43,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005586555] [2020-10-15 00:17:43,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:43,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:43,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:43,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:43,774 INFO L87 Difference]: Start difference. First operand 1507 states and 2077 transitions. Second operand 10 states. [2020-10-15 00:17:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:48,238 INFO L93 Difference]: Finished difference Result 1686 states and 2395 transitions. [2020-10-15 00:17:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:48,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-15 00:17:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:48,248 INFO L225 Difference]: With dead ends: 1686 [2020-10-15 00:17:48,248 INFO L226 Difference]: Without dead ends: 1649 [2020-10-15 00:17:48,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:17:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-10-15 00:17:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1478. [2020-10-15 00:17:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-15 00:17:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2041 transitions. [2020-10-15 00:17:48,415 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2041 transitions. Word has length 51 [2020-10-15 00:17:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:48,415 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 2041 transitions. [2020-10-15 00:17:48,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:48,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2041 transitions. [2020-10-15 00:17:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:48,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:48,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:48,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:17:48,422 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:48,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1155447028, now seen corresponding path program 1 times [2020-10-15 00:17:48,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:48,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019426806] [2020-10-15 00:17:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:17:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:17:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-15 00:17:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:17:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:50,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:50,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:17:50,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-15 00:17:50,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:17:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:17:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 00:17:50,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:50,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:50,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019426806] [2020-10-15 00:17:50,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:50,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:17:50,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058338835] [2020-10-15 00:17:50,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:17:50,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:17:50,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:50,493 INFO L87 Difference]: Start difference. First operand 1478 states and 2041 transitions. Second operand 13 states. [2020-10-15 00:17:52,241 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-15 00:17:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:54,964 INFO L93 Difference]: Finished difference Result 1655 states and 2355 transitions. [2020-10-15 00:17:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:54,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-15 00:17:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:54,973 INFO L225 Difference]: With dead ends: 1655 [2020-10-15 00:17:54,973 INFO L226 Difference]: Without dead ends: 1649 [2020-10-15 00:17:54,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:17:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-10-15 00:17:55,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1478. [2020-10-15 00:17:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-15 00:17:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2040 transitions. [2020-10-15 00:17:55,091 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2040 transitions. Word has length 54 [2020-10-15 00:17:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:55,092 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 2040 transitions. [2020-10-15 00:17:55,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:17:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2040 transitions. [2020-10-15 00:17:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:17:55,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:55,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:55,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:17:55,097 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:55,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1771271244, now seen corresponding path program 1 times [2020-10-15 00:17:55,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:55,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537118382] [2020-10-15 00:17:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:17:55,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-15 00:17:55,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:17:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:55,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:55,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:55,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:55,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:55,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:17:56,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-15 00:17:56,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:17:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:17:56,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-15 00:17:56,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:17:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 00:17:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:56,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:56,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537118382] [2020-10-15 00:17:56,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:56,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:17:56,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049638424] [2020-10-15 00:17:56,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:17:56,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:56,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:17:56,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:56,602 INFO L87 Difference]: Start difference. First operand 1478 states and 2040 transitions. Second operand 15 states. [2020-10-15 00:18:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:00,343 INFO L93 Difference]: Finished difference Result 1672 states and 2379 transitions. [2020-10-15 00:18:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:00,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-15 00:18:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:00,352 INFO L225 Difference]: With dead ends: 1672 [2020-10-15 00:18:00,352 INFO L226 Difference]: Without dead ends: 1645 [2020-10-15 00:18:00,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-10-15 00:18:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1478. [2020-10-15 00:18:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-15 00:18:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2036 transitions. [2020-10-15 00:18:00,495 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2036 transitions. Word has length 55 [2020-10-15 00:18:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:00,495 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 2036 transitions. [2020-10-15 00:18:00,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2036 transitions. [2020-10-15 00:18:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:18:00,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:00,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:00,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:18:00,500 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:00,500 INFO L82 PathProgramCache]: Analyzing trace with hash 41202246, now seen corresponding path program 1 times [2020-10-15 00:18:00,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:00,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20832413] [2020-10-15 00:18:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:00,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:00,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:00,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:00,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:00,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:00,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:18:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:18:01,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 00:18:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:18:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:18:01,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:18:01,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:01,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:18:01,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:18:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:01,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20832413] [2020-10-15 00:18:01,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:01,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:01,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717155150] [2020-10-15 00:18:01,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:01,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:01,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:01,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:01,273 INFO L87 Difference]: Start difference. First operand 1478 states and 2036 transitions. Second operand 15 states. [2020-10-15 00:18:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:06,406 INFO L93 Difference]: Finished difference Result 1663 states and 2362 transitions. [2020-10-15 00:18:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:18:06,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-15 00:18:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:06,416 INFO L225 Difference]: With dead ends: 1663 [2020-10-15 00:18:06,416 INFO L226 Difference]: Without dead ends: 1641 [2020-10-15 00:18:06,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2020-10-15 00:18:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1474. [2020-10-15 00:18:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-10-15 00:18:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2028 transitions. [2020-10-15 00:18:06,572 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2028 transitions. Word has length 56 [2020-10-15 00:18:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:06,572 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 2028 transitions. [2020-10-15 00:18:06,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2028 transitions. [2020-10-15 00:18:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:18:06,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:06,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:06,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:18:06,577 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:06,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1300823154, now seen corresponding path program 1 times [2020-10-15 00:18:06,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:06,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876267177] [2020-10-15 00:18:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:18:06,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-15 00:18:06,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:18:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:18:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:18:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:07,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:18:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:18:07,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 00:18:07,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:18:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:18:07,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 00:18:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:18:07,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:07,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:07,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:18:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:07,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876267177] [2020-10-15 00:18:07,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:07,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:07,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660934630] [2020-10-15 00:18:07,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:07,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:07,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:07,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:07,296 INFO L87 Difference]: Start difference. First operand 1474 states and 2028 transitions. Second operand 15 states. [2020-10-15 00:18:11,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:11,136 INFO L93 Difference]: Finished difference Result 1654 states and 2349 transitions. [2020-10-15 00:18:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:18:11,137 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-15 00:18:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:11,150 INFO L225 Difference]: With dead ends: 1654 [2020-10-15 00:18:11,150 INFO L226 Difference]: Without dead ends: 1632 [2020-10-15 00:18:11,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-10-15 00:18:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1465. [2020-10-15 00:18:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:18:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2015 transitions. [2020-10-15 00:18:11,259 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2015 transitions. Word has length 55 [2020-10-15 00:18:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:11,260 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2015 transitions. [2020-10-15 00:18:11,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2015 transitions. [2020-10-15 00:18:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:18:11,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:11,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:11,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:18:11,264 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:11,265 INFO L82 PathProgramCache]: Analyzing trace with hash 907015974, now seen corresponding path program 1 times [2020-10-15 00:18:11,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:11,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098144402] [2020-10-15 00:18:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:18:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-15 00:18:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 00:18:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:18:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:11,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:11,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:11,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:18:11,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:18:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:18:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:18:11,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 00:18:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:18:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:18:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:11,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098144402] [2020-10-15 00:18:11,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:11,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 00:18:11,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318654340] [2020-10-15 00:18:11,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:18:11,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:18:11,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:11,905 INFO L87 Difference]: Start difference. First operand 1465 states and 2015 transitions. Second operand 16 states. [2020-10-15 00:18:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:16,920 INFO L93 Difference]: Finished difference Result 1652 states and 2343 transitions. [2020-10-15 00:18:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:18:16,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-15 00:18:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:16,933 INFO L225 Difference]: With dead ends: 1652 [2020-10-15 00:18:16,934 INFO L226 Difference]: Without dead ends: 1626 [2020-10-15 00:18:16,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:18:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2020-10-15 00:18:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1459. [2020-10-15 00:18:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-10-15 00:18:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2005 transitions. [2020-10-15 00:18:17,049 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2005 transitions. Word has length 58 [2020-10-15 00:18:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:17,050 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 2005 transitions. [2020-10-15 00:18:17,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:18:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2005 transitions. [2020-10-15 00:18:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:18:17,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:17,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:17,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:18:17,053 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1298759454, now seen corresponding path program 1 times [2020-10-15 00:18:17,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:17,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718877824] [2020-10-15 00:18:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:18:17,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-15 00:18:17,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:18:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:18,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:18,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:18,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:18:18,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-15 00:18:18,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:18:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:18:18,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-15 00:18:18,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:18:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:18:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:18,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:18:18,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:18,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:18,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:18,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:18,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718877824] [2020-10-15 00:18:18,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:18,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:18:18,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143950798] [2020-10-15 00:18:18,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:18:18,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:18,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:18:18,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:18,957 INFO L87 Difference]: Start difference. First operand 1459 states and 2005 transitions. Second operand 19 states. [2020-10-15 00:18:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:23,786 INFO L93 Difference]: Finished difference Result 1654 states and 2355 transitions. [2020-10-15 00:18:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:18:23,787 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-15 00:18:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:23,791 INFO L225 Difference]: With dead ends: 1654 [2020-10-15 00:18:23,792 INFO L226 Difference]: Without dead ends: 1631 [2020-10-15 00:18:23,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:18:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-15 00:18:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1464. [2020-10-15 00:18:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-15 00:18:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2016 transitions. [2020-10-15 00:18:23,907 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2016 transitions. Word has length 62 [2020-10-15 00:18:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:23,908 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2016 transitions. [2020-10-15 00:18:23,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:18:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2016 transitions. [2020-10-15 00:18:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:18:23,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:23,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:23,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:18:23,911 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:23,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:23,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1584070898, now seen corresponding path program 1 times [2020-10-15 00:18:23,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:23,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997124872] [2020-10-15 00:18:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:24,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:18:24,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-15 00:18:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:24,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:18:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:24,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:24,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:24,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:24,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:24,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:24,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:24,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:24,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:18:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:25,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:25,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:18:25,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:25,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:25,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:25,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:25,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:25,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:25,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:25,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:25,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:25,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997124872] [2020-10-15 00:18:25,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:25,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:18:25,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035467659] [2020-10-15 00:18:25,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:18:25,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:18:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:25,652 INFO L87 Difference]: Start difference. First operand 1464 states and 2016 transitions. Second operand 19 states. [2020-10-15 00:18:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:30,693 INFO L93 Difference]: Finished difference Result 1654 states and 2354 transitions. [2020-10-15 00:18:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:18:30,694 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-15 00:18:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:30,699 INFO L225 Difference]: With dead ends: 1654 [2020-10-15 00:18:30,699 INFO L226 Difference]: Without dead ends: 1631 [2020-10-15 00:18:30,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:18:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-15 00:18:30,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1464. [2020-10-15 00:18:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-15 00:18:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2015 transitions. [2020-10-15 00:18:30,869 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2015 transitions. Word has length 59 [2020-10-15 00:18:30,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:30,870 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2015 transitions. [2020-10-15 00:18:30,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:18:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2015 transitions. [2020-10-15 00:18:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:18:30,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:30,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:30,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:18:30,875 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:30,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1473334226, now seen corresponding path program 1 times [2020-10-15 00:18:30,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:30,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476439651] [2020-10-15 00:18:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:31,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:31,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:18:31,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-15 00:18:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:31,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:18:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:18:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:18:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:31,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:31,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:31,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:31,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:31,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:31,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:31,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:31,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:31,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:31,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:31,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:31,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:31,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:31,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:31,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:18:31,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 00:18:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:31,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:18:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:18:32,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-15 00:18:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 00:18:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:18:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:32,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:32,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:32,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476439651] [2020-10-15 00:18:32,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:32,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:18:32,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890743435] [2020-10-15 00:18:32,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:18:32,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:32,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:18:32,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:32,294 INFO L87 Difference]: Start difference. First operand 1464 states and 2015 transitions. Second operand 19 states. [2020-10-15 00:18:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:36,530 INFO L93 Difference]: Finished difference Result 1656 states and 2356 transitions. [2020-10-15 00:18:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:18:36,531 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-15 00:18:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:36,536 INFO L225 Difference]: With dead ends: 1656 [2020-10-15 00:18:36,536 INFO L226 Difference]: Without dead ends: 1631 [2020-10-15 00:18:36,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:18:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-15 00:18:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1464. [2020-10-15 00:18:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-15 00:18:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2009 transitions. [2020-10-15 00:18:36,721 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2009 transitions. Word has length 59 [2020-10-15 00:18:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:36,722 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2009 transitions. [2020-10-15 00:18:36,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:18:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2009 transitions. [2020-10-15 00:18:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:18:36,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:36,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:36,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:18:36,727 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1540741121, now seen corresponding path program 1 times [2020-10-15 00:18:36,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:36,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401711348] [2020-10-15 00:18:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:18:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-15 00:18:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:37,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:18:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:18:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:37,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:18:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:37,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:37,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:18:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:37,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:37,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:37,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:37,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:18:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:18:38,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:18:38,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:18:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:18:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:38,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401711348] [2020-10-15 00:18:38,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:38,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:38,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727990275] [2020-10-15 00:18:38,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:38,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:38,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:38,139 INFO L87 Difference]: Start difference. First operand 1464 states and 2009 transitions. Second operand 15 states. [2020-10-15 00:18:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:42,138 INFO L93 Difference]: Finished difference Result 1662 states and 2356 transitions. [2020-10-15 00:18:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:42,139 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-15 00:18:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:42,145 INFO L225 Difference]: With dead ends: 1662 [2020-10-15 00:18:42,145 INFO L226 Difference]: Without dead ends: 1631 [2020-10-15 00:18:42,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-15 00:18:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1464. [2020-10-15 00:18:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-15 00:18:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2005 transitions. [2020-10-15 00:18:42,302 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2005 transitions. Word has length 59 [2020-10-15 00:18:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:42,302 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2005 transitions. [2020-10-15 00:18:42,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2005 transitions. [2020-10-15 00:18:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:18:42,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:42,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:42,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:18:42,306 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:42,308 INFO L82 PathProgramCache]: Analyzing trace with hash -161090844, now seen corresponding path program 1 times [2020-10-15 00:18:42,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:42,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945888861] [2020-10-15 00:18:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:42,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:18:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-15 00:18:42,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:42,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 00:18:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:18:42,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:42,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:42,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:42,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:42,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:42,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:42,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:42,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:42,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:42,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:18:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:42,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:42,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:18:42,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:18:42,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:42,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:18:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:18:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:43,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945888861] [2020-10-15 00:18:43,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:43,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:43,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379620279] [2020-10-15 00:18:43,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:43,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:43,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:43,053 INFO L87 Difference]: Start difference. First operand 1464 states and 2005 transitions. Second operand 15 states. [2020-10-15 00:18:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:46,819 INFO L93 Difference]: Finished difference Result 1653 states and 2337 transitions. [2020-10-15 00:18:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:46,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-15 00:18:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:46,827 INFO L225 Difference]: With dead ends: 1653 [2020-10-15 00:18:46,827 INFO L226 Difference]: Without dead ends: 1616 [2020-10-15 00:18:46,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-10-15 00:18:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1452. [2020-10-15 00:18:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-15 00:18:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1981 transitions. [2020-10-15 00:18:47,010 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1981 transitions. Word has length 59 [2020-10-15 00:18:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:47,011 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1981 transitions. [2020-10-15 00:18:47,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1981 transitions. [2020-10-15 00:18:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:18:47,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:47,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:47,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:18:47,017 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:47,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1567210602, now seen corresponding path program 1 times [2020-10-15 00:18:47,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:47,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60661033] [2020-10-15 00:18:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:18:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:18:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:18:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-15 00:18:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:18:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:18:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-15 00:18:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:48,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:18:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:48,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:18:48,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:18:48,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:48,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:18:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:18:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:18:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:48,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:48,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:48,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:48,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:48,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:48,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60661033] [2020-10-15 00:18:48,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:48,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-15 00:18:48,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480246105] [2020-10-15 00:18:48,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:18:48,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:48,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:18:48,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:18:48,782 INFO L87 Difference]: Start difference. First operand 1452 states and 1981 transitions. Second operand 18 states. [2020-10-15 00:18:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:53,507 INFO L93 Difference]: Finished difference Result 1896 states and 2741 transitions. [2020-10-15 00:18:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:18:53,508 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-15 00:18:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:53,514 INFO L225 Difference]: With dead ends: 1896 [2020-10-15 00:18:53,514 INFO L226 Difference]: Without dead ends: 1727 [2020-10-15 00:18:53,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:18:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-10-15 00:18:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1464. [2020-10-15 00:18:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-15 00:18:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2009 transitions. [2020-10-15 00:18:53,703 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2009 transitions. Word has length 60 [2020-10-15 00:18:53,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:53,704 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2009 transitions. [2020-10-15 00:18:53,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:18:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2009 transitions. [2020-10-15 00:18:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:18:53,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:53,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:53,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:18:53,711 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:53,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1213114951, now seen corresponding path program 1 times [2020-10-15 00:18:53,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:53,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343536378] [2020-10-15 00:18:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:53,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:18:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:18:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:54,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:54,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:54,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:18:54,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:18:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:18:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:54,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:54,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:54,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:54,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343536378] [2020-10-15 00:18:54,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:54,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:54,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28893442] [2020-10-15 00:18:54,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:54,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:54,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:54,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:54,444 INFO L87 Difference]: Start difference. First operand 1464 states and 2009 transitions. Second operand 15 states. [2020-10-15 00:18:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:58,734 INFO L93 Difference]: Finished difference Result 1674 states and 2388 transitions. [2020-10-15 00:18:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:58,734 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-15 00:18:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:58,739 INFO L225 Difference]: With dead ends: 1674 [2020-10-15 00:18:58,739 INFO L226 Difference]: Without dead ends: 1624 [2020-10-15 00:18:58,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-15 00:18:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1456. [2020-10-15 00:18:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-10-15 00:18:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1991 transitions. [2020-10-15 00:18:58,855 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1991 transitions. Word has length 60 [2020-10-15 00:18:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:58,855 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1991 transitions. [2020-10-15 00:18:58,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1991 transitions. [2020-10-15 00:18:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:18:58,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:58,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:58,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:18:58,860 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1592181779, now seen corresponding path program 1 times [2020-10-15 00:18:58,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:58,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904818785] [2020-10-15 00:18:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:18:59,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-15 00:18:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:18:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:18:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:59,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:59,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:59,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:59,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:59,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:18:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:18:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:18:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:59,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:59,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:59,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:59,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904818785] [2020-10-15 00:18:59,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:59,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:59,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245940838] [2020-10-15 00:18:59,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:59,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:59,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:59,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:59,528 INFO L87 Difference]: Start difference. First operand 1456 states and 1991 transitions. Second operand 15 states. [2020-10-15 00:19:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:03,480 INFO L93 Difference]: Finished difference Result 1646 states and 2334 transitions. [2020-10-15 00:19:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:19:03,481 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-15 00:19:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:03,487 INFO L225 Difference]: With dead ends: 1646 [2020-10-15 00:19:03,487 INFO L226 Difference]: Without dead ends: 1616 [2020-10-15 00:19:03,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:19:03,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-10-15 00:19:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1448. [2020-10-15 00:19:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-10-15 00:19:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1975 transitions. [2020-10-15 00:19:03,658 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1975 transitions. Word has length 60 [2020-10-15 00:19:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:03,658 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1975 transitions. [2020-10-15 00:19:03,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:19:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1975 transitions. [2020-10-15 00:19:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:19:03,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:03,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:03,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:19:03,663 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash 897972042, now seen corresponding path program 1 times [2020-10-15 00:19:03,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:03,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654814230] [2020-10-15 00:19:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:19:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 00:19:03,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:03,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:19:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:19:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:19:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:03,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:19:04,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:04,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 00:19:04,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:19:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:19:04,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:19:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:19:04,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-15 00:19:04,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:19:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:19:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:04,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:19:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:04,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654814230] [2020-10-15 00:19:04,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:04,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-15 00:19:04,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702957277] [2020-10-15 00:19:04,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:19:04,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:19:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:19:04,415 INFO L87 Difference]: Start difference. First operand 1448 states and 1975 transitions. Second operand 18 states. [2020-10-15 00:19:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:09,128 INFO L93 Difference]: Finished difference Result 1678 states and 2413 transitions. [2020-10-15 00:19:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:19:09,128 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-15 00:19:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:09,133 INFO L225 Difference]: With dead ends: 1678 [2020-10-15 00:19:09,133 INFO L226 Difference]: Without dead ends: 1644 [2020-10-15 00:19:09,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:19:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-10-15 00:19:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1456. [2020-10-15 00:19:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-10-15 00:19:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2011 transitions. [2020-10-15 00:19:09,254 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2011 transitions. Word has length 61 [2020-10-15 00:19:09,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:09,255 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 2011 transitions. [2020-10-15 00:19:09,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:19:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2011 transitions. [2020-10-15 00:19:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:19:09,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:09,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:09,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:19:09,259 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash 975197541, now seen corresponding path program 1 times [2020-10-15 00:19:09,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:09,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699132703] [2020-10-15 00:19:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:09,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:19:10,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:19:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-15 00:19:10,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 00:19:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:19:10,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:10,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:10,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:10,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:19:10,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-15 00:19:10,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:19:10,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:19:10,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-15 00:19:10,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:19:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:10,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:19:10,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:10,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:10,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699132703] [2020-10-15 00:19:10,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:10,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 00:19:10,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693700883] [2020-10-15 00:19:10,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:19:10,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:10,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:19:10,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:19:11,000 INFO L87 Difference]: Start difference. First operand 1456 states and 2011 transitions. Second operand 16 states. [2020-10-15 00:19:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:14,313 INFO L93 Difference]: Finished difference Result 1655 states and 2377 transitions. [2020-10-15 00:19:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:19:14,314 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-10-15 00:19:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:14,319 INFO L225 Difference]: With dead ends: 1655 [2020-10-15 00:19:14,319 INFO L226 Difference]: Without dead ends: 1624 [2020-10-15 00:19:14,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:19:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-15 00:19:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1456. [2020-10-15 00:19:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-10-15 00:19:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2009 transitions. [2020-10-15 00:19:14,497 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2009 transitions. Word has length 62 [2020-10-15 00:19:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:14,498 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 2009 transitions. [2020-10-15 00:19:14,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:19:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2009 transitions. [2020-10-15 00:19:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:19:14,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:14,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:14,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:19:14,503 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:14,504 INFO L82 PathProgramCache]: Analyzing trace with hash -850493366, now seen corresponding path program 1 times [2020-10-15 00:19:14,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:14,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195954926] [2020-10-15 00:19:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:19:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-15 00:19:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:14,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:19:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 00:19:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:19:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:14,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:14,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:14,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:14,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:14,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 00:19:14,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 00:19:14,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:14,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:19:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:19:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 00:19:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:19:15,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:19:15,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:19:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:19:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 00:19:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:19:15,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:15,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:19:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:15,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195954926] [2020-10-15 00:19:15,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:15,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:19:15,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586120053] [2020-10-15 00:19:15,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:19:15,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:15,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:19:15,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:19:15,248 INFO L87 Difference]: Start difference. First operand 1456 states and 2009 transitions. Second operand 19 states. [2020-10-15 00:19:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:19,663 INFO L93 Difference]: Finished difference Result 1644 states and 2356 transitions. [2020-10-15 00:19:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:19:19,665 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-15 00:19:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:19,669 INFO L225 Difference]: With dead ends: 1644 [2020-10-15 00:19:19,669 INFO L226 Difference]: Without dead ends: 1614 [2020-10-15 00:19:19,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:19:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2020-10-15 00:19:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1446. [2020-10-15 00:19:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2020-10-15 00:19:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1995 transitions. [2020-10-15 00:19:19,772 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1995 transitions. Word has length 63 [2020-10-15 00:19:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:19,772 INFO L479 AbstractCegarLoop]: Abstraction has 1446 states and 1995 transitions. [2020-10-15 00:19:19,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:19:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1995 transitions. [2020-10-15 00:19:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:19:19,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:19,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:19,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:19:19,776 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash -200520490, now seen corresponding path program 1 times [2020-10-15 00:19:19,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:19,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494163601] [2020-10-15 00:19:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:19,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:19,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:19:19,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 00:19:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:19,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:19:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 00:19:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:19:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:19:20,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 00:19:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:19:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:19:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:19:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:19:20,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:19:20,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:19:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:19:20,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:20,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:20,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:19:20,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:20,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:19:20,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:20,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494163601] [2020-10-15 00:19:20,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:20,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:19:20,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821600747] [2020-10-15 00:19:20,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:19:20,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:20,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:19:20,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:19:20,476 INFO L87 Difference]: Start difference. First operand 1446 states and 1995 transitions. Second operand 19 states. [2020-10-15 00:19:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:25,535 INFO L93 Difference]: Finished difference Result 1634 states and 2342 transitions. [2020-10-15 00:19:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:19:25,536 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-15 00:19:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:25,541 INFO L225 Difference]: With dead ends: 1634 [2020-10-15 00:19:25,541 INFO L226 Difference]: Without dead ends: 1604 [2020-10-15 00:19:25,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:19:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-10-15 00:19:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1436. [2020-10-15 00:19:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-15 00:19:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1981 transitions. [2020-10-15 00:19:25,651 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1981 transitions. Word has length 62 [2020-10-15 00:19:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:25,651 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 1981 transitions. [2020-10-15 00:19:25,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:19:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1981 transitions. [2020-10-15 00:19:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:19:25,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:25,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:25,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:19:25,654 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:25,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2021232478, now seen corresponding path program 1 times [2020-10-15 00:19:25,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:25,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504177479] [2020-10-15 00:19:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:19:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-15 00:19:26,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:19:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 00:19:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:19:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:26,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:26,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:19:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:19:26,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-15 00:19:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:19:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:19:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:19:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:19:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:27,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:19:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:27,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504177479] [2020-10-15 00:19:27,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:27,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:19:27,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862601725] [2020-10-15 00:19:27,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:19:27,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:27,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:19:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:19:27,133 INFO L87 Difference]: Start difference. First operand 1436 states and 1981 transitions. Second operand 19 states. [2020-10-15 00:19:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:31,960 INFO L93 Difference]: Finished difference Result 1627 states and 2333 transitions. [2020-10-15 00:19:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:19:31,960 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-15 00:19:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:31,964 INFO L225 Difference]: With dead ends: 1627 [2020-10-15 00:19:31,964 INFO L226 Difference]: Without dead ends: 1604 [2020-10-15 00:19:31,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:19:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-10-15 00:19:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1436. [2020-10-15 00:19:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-15 00:19:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1980 transitions. [2020-10-15 00:19:32,066 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1980 transitions. Word has length 63 [2020-10-15 00:19:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:32,067 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 1980 transitions. [2020-10-15 00:19:32,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:19:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1980 transitions. [2020-10-15 00:19:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:19:32,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:32,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:32,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:19:32,070 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:32,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1818293410, now seen corresponding path program 1 times [2020-10-15 00:19:32,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:32,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152230287] [2020-10-15 00:19:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:32,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 00:19:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:19:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:32,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:32,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:32,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:19:33,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-15 00:19:33,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:19:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:19:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:19:33,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-15 00:19:33,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:19:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:19:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:33,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:33,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:33,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:19:33,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:19:33,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:19:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:33,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:33,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:33,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:33,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152230287] [2020-10-15 00:19:33,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:33,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-15 00:19:33,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085113365] [2020-10-15 00:19:33,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:19:33,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:33,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:19:33,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:19:33,793 INFO L87 Difference]: Start difference. First operand 1436 states and 1980 transitions. Second operand 20 states. [2020-10-15 00:19:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:39,153 INFO L93 Difference]: Finished difference Result 1627 states and 2332 transitions. [2020-10-15 00:19:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:19:39,153 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-15 00:19:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:39,159 INFO L225 Difference]: With dead ends: 1627 [2020-10-15 00:19:39,159 INFO L226 Difference]: Without dead ends: 1604 [2020-10-15 00:19:39,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:19:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-10-15 00:19:39,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1436. [2020-10-15 00:19:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-15 00:19:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1979 transitions. [2020-10-15 00:19:39,312 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1979 transitions. Word has length 67 [2020-10-15 00:19:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:39,312 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 1979 transitions. [2020-10-15 00:19:39,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:19:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1979 transitions. [2020-10-15 00:19:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:19:39,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:39,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:39,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:19:39,316 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:39,316 INFO L82 PathProgramCache]: Analyzing trace with hash -690469211, now seen corresponding path program 1 times [2020-10-15 00:19:39,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:39,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994012243] [2020-10-15 00:19:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:39,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 00:19:39,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-15 00:19:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:39,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:19:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 00:19:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:19:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:40,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:19:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:19:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:19:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:19:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:19:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:40,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:40,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:40,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:40,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994012243] [2020-10-15 00:19:40,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:40,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-15 00:19:40,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817050928] [2020-10-15 00:19:40,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:19:40,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:40,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:19:40,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:19:40,768 INFO L87 Difference]: Start difference. First operand 1436 states and 1979 transitions. Second operand 20 states. [2020-10-15 00:19:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:46,287 INFO L93 Difference]: Finished difference Result 1627 states and 2330 transitions. [2020-10-15 00:19:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:19:46,287 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-15 00:19:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:46,292 INFO L225 Difference]: With dead ends: 1627 [2020-10-15 00:19:46,293 INFO L226 Difference]: Without dead ends: 1604 [2020-10-15 00:19:46,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:19:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-10-15 00:19:46,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1436. [2020-10-15 00:19:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-15 00:19:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1978 transitions. [2020-10-15 00:19:46,397 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1978 transitions. Word has length 66 [2020-10-15 00:19:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:46,398 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 1978 transitions. [2020-10-15 00:19:46,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:19:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1978 transitions. [2020-10-15 00:19:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:19:46,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:46,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:46,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:19:46,402 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1775074012, now seen corresponding path program 1 times [2020-10-15 00:19:46,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:46,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804688591] [2020-10-15 00:19:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:19:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:19:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:19:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:46,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:46,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:46,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:46,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:46,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:46,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:46,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:46,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:19:47,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-15 00:19:47,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:19:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:19:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:19:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:19:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:47,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:19:47,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:19:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:19:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:47,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804688591] [2020-10-15 00:19:47,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:47,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-15 00:19:47,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391740023] [2020-10-15 00:19:47,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:19:47,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:47,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:19:47,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:19:47,447 INFO L87 Difference]: Start difference. First operand 1436 states and 1978 transitions. Second operand 20 states.