/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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:15:11,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:15:11,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:15:11,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:15:11,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:15:11,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:15:11,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:15:11,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:15:11,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:15:11,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:15:11,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:15:11,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:15:11,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:15:11,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:15:11,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:15:11,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:15:11,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:15:11,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:15:11,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:15:11,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:15:11,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:15:11,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:15:11,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:15:11,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:15:11,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:15:11,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:15:11,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:15:11,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:15:11,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:15:11,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:15:11,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:15:11,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:15:11,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:15:11,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:15:11,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:15:11,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:15:11,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:15:11,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:15:11,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:15:11,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:15:11,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:15:11,773 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 00:15:11,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:15:11,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:15:11,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:15:11,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:15:11,798 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:15:11,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:15:11,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:15:11,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:15:11,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:15:11,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:15:11,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:15:11,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:15:11,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:15:11,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:15:11,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:15:11,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:15:11,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:15:11,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:15:11,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:15:11,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:15:11,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:15:11,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:15:11,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:15:11,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:15:11,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:15:11,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:15:11,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:15:11,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:15:11,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:15:11,803 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 00:15:12,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:15:12,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:15:12,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:15:12,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:15:12,136 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:15:12,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-15 00:15:12,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d411f8e6/5750a4eda7c74b5cbfd1800dc62137d7/FLAGe38eb6047 [2020-10-15 00:15:12,876 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:15:12,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-15 00:15:12,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d411f8e6/5750a4eda7c74b5cbfd1800dc62137d7/FLAGe38eb6047 [2020-10-15 00:15:13,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d411f8e6/5750a4eda7c74b5cbfd1800dc62137d7 [2020-10-15 00:15:13,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:15:13,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:15:13,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:15:13,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:15:13,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:15:13,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:15:13" (1/1) ... [2020-10-15 00:15:13,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6f757b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:13, skipping insertion in model container [2020-10-15 00:15:13,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:15:13" (1/1) ... [2020-10-15 00:15:13,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:15:13,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:15:13,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:15:13,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:15:14,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:15:14,039 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:15:14,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14 WrapperNode [2020-10-15 00:15:14,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:15:14,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:15:14,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:15:14,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:15:14,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (1/1) ... [2020-10-15 00:15:14,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:15:14,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:15:14,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:15:14,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:15:14,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (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 00:15:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:15:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:15:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-15 00:15:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-15 00:15:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-15 00:15:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-15 00:15:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-15 00:15:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-15 00:15:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-15 00:15:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-15 00:15:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-15 00:15:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-15 00:15:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-15 00:15:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-15 00:15:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-15 00:15:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-15 00:15:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-15 00:15:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-15 00:15:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-15 00:15:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-15 00:15:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-15 00:15:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-15 00:15:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:15:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-15 00:15:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-15 00:15:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-15 00:15:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-15 00:15:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-15 00:15:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-15 00:15:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-15 00:15:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:15:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 00:15:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:15:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 00:15:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-15 00:15:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-15 00:15:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-15 00:15:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-15 00:15:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-15 00:15:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-15 00:15:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-15 00:15:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-15 00:15:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-15 00:15:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-15 00:15:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-15 00:15:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-15 00:15:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-15 00:15:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-15 00:15:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-15 00:15:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-15 00:15:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-15 00:15:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-15 00:15:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-15 00:15:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-15 00:15:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-15 00:15:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-15 00:15:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-15 00:15:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-15 00:15:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-15 00:15:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-15 00:15:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:15:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-15 00:15:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:15:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:15:14,831 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:14,921 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-15 00:15:14,922 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-15 00:15:14,929 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:14,982 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-15 00:15:14,983 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-15 00:15:15,012 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,043 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-15 00:15:15,043 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-15 00:15:15,158 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,208 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-15 00:15:15,209 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-15 00:15:15,209 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint L303: #res := 0; [2020-10-15 00:15:15,218 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,434 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-15 00:15:15,435 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-15 00:15:15,436 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,473 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-15 00:15:15,474 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-15 00:15:15,507 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,529 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-15 00:15:15,529 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-15 00:15:15,534 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,741 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-15 00:15:15,741 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-15 00:15:15,757 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:15:15,763 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:15:15,764 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:15:15,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:15:15,792 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:15:15,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:15:15 BoogieIcfgContainer [2020-10-15 00:15:15,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:15:15,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:15:15,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:15:15,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:15:15,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:15:13" (1/3) ... [2020-10-15 00:15:15,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375b58de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:15:15, skipping insertion in model container [2020-10-15 00:15:15,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:15:14" (2/3) ... [2020-10-15 00:15:15,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375b58de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:15:15, skipping insertion in model container [2020-10-15 00:15:15,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:15:15" (3/3) ... [2020-10-15 00:15:15,808 INFO L109 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2020-10-15 00:15:15,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:15:15,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:15:15,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:15:15,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:15:15,870 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:15:15,870 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:15:15,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:15:15,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:15:15,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:15:15,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:15:15,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:15:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states. [2020-10-15 00:15:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:15:15,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:15,909 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 00:15:15,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:15,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:15,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1098408584, now seen corresponding path program 1 times [2020-10-15 00:15:15,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:15,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248128018] [2020-10-15 00:15:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:16,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:17,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:15:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:15:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-15 00:15:17,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:17,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:15:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:15:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:15:17,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:17,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:17,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:17,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:15:17,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:17,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:17,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:17,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 00:15:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:17,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:17,341 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 00:15:17,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248128018] [2020-10-15 00:15:17,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:17,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:15:17,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878987595] [2020-10-15 00:15:17,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:15:17,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:17,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:15:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:15:17,368 INFO L87 Difference]: Start difference. First operand 517 states. Second operand 5 states. [2020-10-15 00:15:20,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:20,223 INFO L93 Difference]: Finished difference Result 1222 states and 1940 transitions. [2020-10-15 00:15:20,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:15:20,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:15:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:20,248 INFO L225 Difference]: With dead ends: 1222 [2020-10-15 00:15:20,248 INFO L226 Difference]: Without dead ends: 845 [2020-10-15 00:15:20,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:15:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-15 00:15:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 673. [2020-10-15 00:15:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-15 00:15:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 965 transitions. [2020-10-15 00:15:20,431 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 965 transitions. Word has length 20 [2020-10-15 00:15:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:20,432 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 965 transitions. [2020-10-15 00:15:20,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:15:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 965 transitions. [2020-10-15 00:15:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:15:20,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:20,433 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 00:15:20,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:15:20,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1083417759, now seen corresponding path program 1 times [2020-10-15 00:15:20,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:20,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163832686] [2020-10-15 00:15:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:15:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 00:15:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:20,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:15:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:15:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:20,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:20,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:20,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:15:20,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:20,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:20,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:20,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:20,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:15:20,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:20,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:20,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:20,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:20,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:20,681 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 00:15:20,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163832686] [2020-10-15 00:15:20,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:20,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:15:20,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185909001] [2020-10-15 00:15:20,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:15:20,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:15:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:15:20,685 INFO L87 Difference]: Start difference. First operand 673 states and 965 transitions. Second operand 5 states. [2020-10-15 00:15:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:23,404 INFO L93 Difference]: Finished difference Result 848 states and 1264 transitions. [2020-10-15 00:15:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:15:23,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:15:23,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:23,413 INFO L225 Difference]: With dead ends: 848 [2020-10-15 00:15:23,414 INFO L226 Difference]: Without dead ends: 832 [2020-10-15 00:15:23,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:15:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-15 00:15:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 673. [2020-10-15 00:15:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-15 00:15:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 964 transitions. [2020-10-15 00:15:23,480 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 964 transitions. Word has length 20 [2020-10-15 00:15:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:23,480 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 964 transitions. [2020-10-15 00:15:23,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:15:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 964 transitions. [2020-10-15 00:15:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:15:23,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:23,482 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 00:15:23,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:15:23,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1051395834, now seen corresponding path program 1 times [2020-10-15 00:15:23,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:23,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827087037] [2020-10-15 00:15:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:23,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:23,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:15:23,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-15 00:15:23,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:23,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:23,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:15:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:15:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:15:23,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:23,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:23,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:23,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:23,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:23,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:15:23,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:23,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:15:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:23,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:23,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:23,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:23,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:23,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:15:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:23,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:23,855 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 00:15:23,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827087037] [2020-10-15 00:15:23,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:23,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:15:23,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019208091] [2020-10-15 00:15:23,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:15:23,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:23,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:15:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:15:23,857 INFO L87 Difference]: Start difference. First operand 673 states and 964 transitions. Second operand 6 states. [2020-10-15 00:15:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:27,108 INFO L93 Difference]: Finished difference Result 1369 states and 1983 transitions. [2020-10-15 00:15:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:15:27,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-15 00:15:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:27,121 INFO L225 Difference]: With dead ends: 1369 [2020-10-15 00:15:27,121 INFO L226 Difference]: Without dead ends: 1148 [2020-10-15 00:15:27,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:15:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2020-10-15 00:15:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 928. [2020-10-15 00:15:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-10-15 00:15:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1329 transitions. [2020-10-15 00:15:27,218 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1329 transitions. Word has length 25 [2020-10-15 00:15:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:27,219 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1329 transitions. [2020-10-15 00:15:27,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:15:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1329 transitions. [2020-10-15 00:15:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:15:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:27,221 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 00:15:27,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:15:27,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash -584641203, now seen corresponding path program 1 times [2020-10-15 00:15:27,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:27,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050431096] [2020-10-15 00:15:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:15:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-15 00:15:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:27,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:15:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:15:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:15:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:27,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:27,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:27,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:15:27,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:27,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:27,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:27,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:15:27,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:27,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:27,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:15:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:27,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:27,755 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 00:15:27,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050431096] [2020-10-15 00:15:27,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:27,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:15:27,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342732237] [2020-10-15 00:15:27,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:15:27,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:15:27,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:15:27,761 INFO L87 Difference]: Start difference. First operand 928 states and 1329 transitions. Second operand 6 states. [2020-10-15 00:15:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:30,712 INFO L93 Difference]: Finished difference Result 1400 states and 2000 transitions. [2020-10-15 00:15:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:15:30,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-15 00:15:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:30,720 INFO L225 Difference]: With dead ends: 1400 [2020-10-15 00:15:30,720 INFO L226 Difference]: Without dead ends: 1126 [2020-10-15 00:15:30,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:15:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-10-15 00:15:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 968. [2020-10-15 00:15:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-10-15 00:15:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1385 transitions. [2020-10-15 00:15:30,792 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1385 transitions. Word has length 30 [2020-10-15 00:15:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:30,792 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1385 transitions. [2020-10-15 00:15:30,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:15:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1385 transitions. [2020-10-15 00:15:30,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:15:30,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:30,795 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 00:15:30,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:15:30,795 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:30,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:30,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1008074, now seen corresponding path program 1 times [2020-10-15 00:15:30,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:30,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132780610] [2020-10-15 00:15:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:30,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:31,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:15:31,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:15:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-15 00:15:31,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:31,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:15:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:15:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:15:31,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:31,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:31,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:31,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:15:31,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:31,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:31,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:31,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:15:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:31,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:31,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:31,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:15:31,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:31,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:15:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:15:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:31,389 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 00:15:31,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132780610] [2020-10-15 00:15:31,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:31,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:15:31,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922388894] [2020-10-15 00:15:31,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:15:31,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:15:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:15:31,391 INFO L87 Difference]: Start difference. First operand 968 states and 1385 transitions. Second operand 8 states. [2020-10-15 00:15:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:35,388 INFO L93 Difference]: Finished difference Result 2077 states and 3057 transitions. [2020-10-15 00:15:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:15:35,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-15 00:15:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:35,398 INFO L225 Difference]: With dead ends: 2077 [2020-10-15 00:15:35,399 INFO L226 Difference]: Without dead ends: 1335 [2020-10-15 00:15:35,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:15:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-15 00:15:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1037. [2020-10-15 00:15:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-10-15 00:15:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1487 transitions. [2020-10-15 00:15:35,484 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1487 transitions. Word has length 31 [2020-10-15 00:15:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:35,485 INFO L479 AbstractCegarLoop]: Abstraction has 1037 states and 1487 transitions. [2020-10-15 00:15:35,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:15:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1487 transitions. [2020-10-15 00:15:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:15:35,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:35,490 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 00:15:35,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:15:35,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash 428268071, now seen corresponding path program 1 times [2020-10-15 00:15:35,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:35,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282941802] [2020-10-15 00:15:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:35,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:15:35,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-15 00:15:35,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:35,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:15:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:15:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:15:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:35,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:35,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:35,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:35,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:35,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:35,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:35,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:35,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:35,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:35,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:35,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:15:35,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:35,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:15:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:35,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:35,904 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 00:15:35,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282941802] [2020-10-15 00:15:35,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:35,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:15:35,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943447177] [2020-10-15 00:15:35,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:15:35,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:15:35,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:15:35,909 INFO L87 Difference]: Start difference. First operand 1037 states and 1487 transitions. Second operand 6 states. [2020-10-15 00:15:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:38,587 INFO L93 Difference]: Finished difference Result 1161 states and 1702 transitions. [2020-10-15 00:15:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:15:38,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-15 00:15:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:38,597 INFO L225 Difference]: With dead ends: 1161 [2020-10-15 00:15:38,597 INFO L226 Difference]: Without dead ends: 1157 [2020-10-15 00:15:38,598 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 00:15:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-10-15 00:15:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1036. [2020-10-15 00:15:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-10-15 00:15:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1484 transitions. [2020-10-15 00:15:38,676 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1484 transitions. Word has length 36 [2020-10-15 00:15:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:38,676 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1484 transitions. [2020-10-15 00:15:38,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:15:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1484 transitions. [2020-10-15 00:15:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:15:38,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:38,679 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 00:15:38,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:15:38,679 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1410155750, now seen corresponding path program 1 times [2020-10-15 00:15:38,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:38,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965051038] [2020-10-15 00:15:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:39,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:15:39,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:15:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-15 00:15:39,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:39,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:15:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:15:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:15:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:15:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:39,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:39,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:39,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:39,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:15:39,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:39,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:39,623 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 00:15:39,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965051038] [2020-10-15 00:15:39,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:39,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:15:39,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274583725] [2020-10-15 00:15:39,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:15:39,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:15:39,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:15:39,625 INFO L87 Difference]: Start difference. First operand 1036 states and 1484 transitions. Second operand 6 states. [2020-10-15 00:15:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:42,680 INFO L93 Difference]: Finished difference Result 1170 states and 1709 transitions. [2020-10-15 00:15:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:15:42,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-15 00:15:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:42,692 INFO L225 Difference]: With dead ends: 1170 [2020-10-15 00:15:42,693 INFO L226 Difference]: Without dead ends: 1167 [2020-10-15 00:15:42,695 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 00:15:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-10-15 00:15:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1035. [2020-10-15 00:15:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-15 00:15:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1482 transitions. [2020-10-15 00:15:42,820 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1482 transitions. Word has length 39 [2020-10-15 00:15:42,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:42,822 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1482 transitions. [2020-10-15 00:15:42,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:15:42,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1482 transitions. [2020-10-15 00:15:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:15:42,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:42,828 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 00:15:42,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:15:42,828 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash -539598420, now seen corresponding path program 1 times [2020-10-15 00:15:42,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:42,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146289819] [2020-10-15 00:15:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:43,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:15:43,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:15:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-15 00:15:43,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:43,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:15:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:15:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:43,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:43,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:43,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:43,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:15:43,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:43,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:43,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:43,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:43,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:15:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:43,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:43,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:43,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:43,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:43,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:15:43,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:43,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:15:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:43,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:43,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:15:43,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:43,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:15:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:15:43,496 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 00:15:43,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146289819] [2020-10-15 00:15:43,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:43,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:15:43,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172171752] [2020-10-15 00:15:43,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:15:43,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:43,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:15:43,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:15:43,499 INFO L87 Difference]: Start difference. First operand 1035 states and 1482 transitions. Second operand 7 states. [2020-10-15 00:15:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:46,770 INFO L93 Difference]: Finished difference Result 1550 states and 2216 transitions. [2020-10-15 00:15:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:15:46,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-15 00:15:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:46,779 INFO L225 Difference]: With dead ends: 1550 [2020-10-15 00:15:46,779 INFO L226 Difference]: Without dead ends: 1083 [2020-10-15 00:15:46,782 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 00:15:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-10-15 00:15:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 874. [2020-10-15 00:15:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-10-15 00:15:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1231 transitions. [2020-10-15 00:15:46,857 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1231 transitions. Word has length 46 [2020-10-15 00:15:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:46,858 INFO L479 AbstractCegarLoop]: Abstraction has 874 states and 1231 transitions. [2020-10-15 00:15:46,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:15:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1231 transitions. [2020-10-15 00:15:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:15:46,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:46,861 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 00:15:46,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:15:46,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:46,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1793960754, now seen corresponding path program 1 times [2020-10-15 00:15:46,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:46,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283451897] [2020-10-15 00:15:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:47,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:47,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:15:47,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:15:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-15 00:15:47,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:47,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:15:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:15:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:15:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:47,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:47,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:47,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:47,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:47,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:15:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:15:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:47,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:47,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:47,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:15:47,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:47,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:15:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:47,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:15:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:47,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:47,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:15:47,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:15:47,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:47,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:15:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:15:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:47,753 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 00:15:47,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283451897] [2020-10-15 00:15:47,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:47,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:15:47,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149959575] [2020-10-15 00:15:47,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:15:47,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:47,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:15:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:15:47,760 INFO L87 Difference]: Start difference. First operand 874 states and 1231 transitions. Second operand 9 states. [2020-10-15 00:15:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:53,258 INFO L93 Difference]: Finished difference Result 1739 states and 2556 transitions. [2020-10-15 00:15:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:15:53,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-15 00:15:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:53,270 INFO L225 Difference]: With dead ends: 1739 [2020-10-15 00:15:53,271 INFO L226 Difference]: Without dead ends: 1481 [2020-10-15 00:15:53,273 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 00:15:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-10-15 00:15:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 963. [2020-10-15 00:15:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-15 00:15:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1333 transitions. [2020-10-15 00:15:53,360 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1333 transitions. Word has length 47 [2020-10-15 00:15:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:53,361 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1333 transitions. [2020-10-15 00:15:53,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:15:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1333 transitions. [2020-10-15 00:15:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:15:53,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:53,364 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 00:15:53,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:15:53,364 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:53,365 INFO L82 PathProgramCache]: Analyzing trace with hash -915524998, now seen corresponding path program 1 times [2020-10-15 00:15:53,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:53,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709875152] [2020-10-15 00:15:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:53,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:53,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:15:53,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:15:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 00:15:53,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:53,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:15:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:15:53,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:53,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:53,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:53,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:15:53,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:53,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:53,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:53,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:53,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:53,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:53,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:53,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:53,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:53,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:15:53,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:53,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-15 00:15:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:53,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:53,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:53,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:53,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:15:53,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:53,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:15:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:53,732 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 00:15:53,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709875152] [2020-10-15 00:15:53,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:53,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:15:53,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949521791] [2020-10-15 00:15:53,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:15:53,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:53,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:15:53,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:15:53,734 INFO L87 Difference]: Start difference. First operand 963 states and 1333 transitions. Second operand 7 states. [2020-10-15 00:15:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:15:56,083 INFO L93 Difference]: Finished difference Result 1229 states and 1732 transitions. [2020-10-15 00:15:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:15:56,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-15 00:15:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:15:56,091 INFO L225 Difference]: With dead ends: 1229 [2020-10-15 00:15:56,091 INFO L226 Difference]: Without dead ends: 1108 [2020-10-15 00:15:56,092 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 00:15:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2020-10-15 00:15:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 962. [2020-10-15 00:15:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-15 00:15:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1327 transitions. [2020-10-15 00:15:56,176 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1327 transitions. Word has length 47 [2020-10-15 00:15:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:15:56,176 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1327 transitions. [2020-10-15 00:15:56,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:15:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1327 transitions. [2020-10-15 00:15:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:15:56,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:15:56,180 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 00:15:56,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:15:56,181 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:15:56,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:15:56,181 INFO L82 PathProgramCache]: Analyzing trace with hash 18439833, now seen corresponding path program 1 times [2020-10-15 00:15:56,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:15:56,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631279639] [2020-10-15 00:15:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:15:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:56,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:15:57,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:15:57,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-15 00:15:57,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:15:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:15:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:15:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:57,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:57,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:15:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:15:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:15:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:15:57,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:15:57,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:15:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:15:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:15:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:57,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:15:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:15:57,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:15:57,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-15 00:15:57,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 00:15:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:15:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:15:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:15:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:15:57,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:15:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:15:57,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:57,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-15 00:15:57,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:15:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:57,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:15:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:15:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:15:57,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:15:57,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:15:57,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:15:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:15:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:15:57,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:15:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:15:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:15:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:15:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:15:57,649 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 00:15:57,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631279639] [2020-10-15 00:15:57,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:15:57,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:15:57,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507015533] [2020-10-15 00:15:57,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:15:57,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:15:57,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:15:57,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:15:57,652 INFO L87 Difference]: Start difference. First operand 962 states and 1327 transitions. Second operand 9 states. [2020-10-15 00:16:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:01,393 INFO L93 Difference]: Finished difference Result 1233 states and 1730 transitions. [2020-10-15 00:16:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:16:01,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 00:16:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:01,399 INFO L225 Difference]: With dead ends: 1233 [2020-10-15 00:16:01,399 INFO L226 Difference]: Without dead ends: 1028 [2020-10-15 00:16:01,400 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 00:16:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-10-15 00:16:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 858. [2020-10-15 00:16:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-15 00:16:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1181 transitions. [2020-10-15 00:16:01,471 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1181 transitions. Word has length 52 [2020-10-15 00:16:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:01,471 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1181 transitions. [2020-10-15 00:16:01,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:16:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1181 transitions. [2020-10-15 00:16:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:16:01,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:01,475 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 00:16:01,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:16:01,475 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:01,475 INFO L82 PathProgramCache]: Analyzing trace with hash -704891783, now seen corresponding path program 1 times [2020-10-15 00:16:01,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:01,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364134820] [2020-10-15 00:16:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:01,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:16:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:16:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-15 00:16:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:02,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:16:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:02,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:02,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:02,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:02,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:02,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:02,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:02,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:02,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:02,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:02,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:02,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:02,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:02,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:02,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:16:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:16:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 00:16:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:02,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:16:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:02,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:02,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:02,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:16:02,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:02,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:02,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:16:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:02,537 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 00:16:02,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364134820] [2020-10-15 00:16:02,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:02,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:16:02,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449256357] [2020-10-15 00:16:02,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:16:02,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:16:02,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:16:02,540 INFO L87 Difference]: Start difference. First operand 858 states and 1181 transitions. Second operand 9 states. [2020-10-15 00:16:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:06,652 INFO L93 Difference]: Finished difference Result 1032 states and 1471 transitions. [2020-10-15 00:16:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:16:06,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-15 00:16:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:06,659 INFO L225 Difference]: With dead ends: 1032 [2020-10-15 00:16:06,659 INFO L226 Difference]: Without dead ends: 1021 [2020-10-15 00:16:06,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:16:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-15 00:16:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 858. [2020-10-15 00:16:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-15 00:16:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1179 transitions. [2020-10-15 00:16:06,732 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1179 transitions. Word has length 49 [2020-10-15 00:16:06,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:06,733 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1179 transitions. [2020-10-15 00:16:06,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:16:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1179 transitions. [2020-10-15 00:16:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:16:06,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:06,736 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 00:16:06,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:16:06,736 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1017135046, now seen corresponding path program 1 times [2020-10-15 00:16:06,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:06,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037685362] [2020-10-15 00:16:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:07,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:16:07,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 00:16:07,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:07,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:07,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:16:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:07,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:07,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:07,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:07,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:07,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:07,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:07,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:07,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:07,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:07,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:07,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:07,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:07,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:07,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:07,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:07,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:07,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:16:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:07,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:07,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:16:07,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:16:07,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:07,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:16:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:16:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:07,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:16:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:16:07,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:07,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:16:07,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:16:07,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:07,618 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 00:16:07,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037685362] [2020-10-15 00:16:07,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:07,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:16:07,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056002019] [2020-10-15 00:16:07,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:16:07,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:07,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:16:07,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:16:07,622 INFO L87 Difference]: Start difference. First operand 858 states and 1179 transitions. Second operand 12 states. [2020-10-15 00:16:07,757 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-15 00:16:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:11,728 INFO L93 Difference]: Finished difference Result 1136 states and 1598 transitions. [2020-10-15 00:16:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:16:11,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-15 00:16:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:11,735 INFO L225 Difference]: With dead ends: 1136 [2020-10-15 00:16:11,735 INFO L226 Difference]: Without dead ends: 1077 [2020-10-15 00:16:11,736 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 00:16:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-10-15 00:16:11,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 878. [2020-10-15 00:16:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-10-15 00:16:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1215 transitions. [2020-10-15 00:16:11,815 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1215 transitions. Word has length 50 [2020-10-15 00:16:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:11,816 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1215 transitions. [2020-10-15 00:16:11,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:16:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1215 transitions. [2020-10-15 00:16:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:16:11,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:11,819 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 00:16:11,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:16:11,820 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash -421895854, now seen corresponding path program 1 times [2020-10-15 00:16:11,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:11,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804770085] [2020-10-15 00:16:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:16:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-15 00:16:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:12,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:16:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:12,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:12,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:12,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:12,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:12,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:12,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:12,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:12,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:12,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:12,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:12,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:12,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:12,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:12,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:16:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:12,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:12,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:16:12,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:16:12,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:12,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:16:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:16:12,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:12,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:12,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:16:12,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:16:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:12,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:16:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:16:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:16:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:12,547 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 00:16:12,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804770085] [2020-10-15 00:16:12,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:12,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:16:12,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281379213] [2020-10-15 00:16:12,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:16:12,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:12,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:16:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:16:12,549 INFO L87 Difference]: Start difference. First operand 878 states and 1215 transitions. Second operand 11 states. [2020-10-15 00:16:12,710 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-15 00:16:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:16,503 INFO L93 Difference]: Finished difference Result 1059 states and 1502 transitions. [2020-10-15 00:16:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:16:16,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-15 00:16:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:16,510 INFO L225 Difference]: With dead ends: 1059 [2020-10-15 00:16:16,510 INFO L226 Difference]: Without dead ends: 996 [2020-10-15 00:16:16,511 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 00:16:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-10-15 00:16:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 876. [2020-10-15 00:16:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-10-15 00:16:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1209 transitions. [2020-10-15 00:16:16,610 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1209 transitions. Word has length 50 [2020-10-15 00:16:16,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:16,610 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1209 transitions. [2020-10-15 00:16:16,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:16:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1209 transitions. [2020-10-15 00:16:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:16:16,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:16,614 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 00:16:16,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:16:16,615 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:16,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2025619538, now seen corresponding path program 1 times [2020-10-15 00:16:16,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:16,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924798074] [2020-10-15 00:16:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:16,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:16,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:16:16,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 00:16:16,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:16,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:16:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:16:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:16,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:16,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:16,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:16,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:16,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:16,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:16,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:16,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:16,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:16,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:16,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:16,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:16:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:16:16,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 00:16:16,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:16,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:16,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:16,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:16:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:16,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:16,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:16:16,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:16:16,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:16,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:16,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:16:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:16,967 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 00:16:16,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924798074] [2020-10-15 00:16:16,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:16,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:16:16,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191687040] [2020-10-15 00:16:16,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:16:16,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:16,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:16:16,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:16:16,970 INFO L87 Difference]: Start difference. First operand 876 states and 1209 transitions. Second operand 7 states. [2020-10-15 00:16:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:20,651 INFO L93 Difference]: Finished difference Result 1174 states and 1659 transitions. [2020-10-15 00:16:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:16:20,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-15 00:16:20,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:20,658 INFO L225 Difference]: With dead ends: 1174 [2020-10-15 00:16:20,658 INFO L226 Difference]: Without dead ends: 1158 [2020-10-15 00:16:20,659 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 00:16:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2020-10-15 00:16:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 932. [2020-10-15 00:16:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2020-10-15 00:16:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1269 transitions. [2020-10-15 00:16:20,774 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1269 transitions. Word has length 50 [2020-10-15 00:16:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:20,774 INFO L479 AbstractCegarLoop]: Abstraction has 932 states and 1269 transitions. [2020-10-15 00:16:20,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:16:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1269 transitions. [2020-10-15 00:16:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:16:20,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:20,777 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, 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 00:16:20,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:16:20,778 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:20,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1098118333, now seen corresponding path program 1 times [2020-10-15 00:16:20,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:20,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667889360] [2020-10-15 00:16:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:20,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:20,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:16:20,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-15 00:16:20,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:20,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 00:16:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:16:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:20,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:20,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:20,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:20,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:20,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:21,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:21,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:21,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:21,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:21,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:21,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:21,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:21,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:16:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:21,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:21,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:16:21,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:16:21,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:21,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:16:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:21,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:16:21,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:16:21,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:21,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:16:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:21,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:21,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:16:21,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:21,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:21,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:16:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:21,229 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 00:16:21,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667889360] [2020-10-15 00:16:21,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:21,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:16:21,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782702203] [2020-10-15 00:16:21,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:16:21,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:21,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:16:21,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:16:21,234 INFO L87 Difference]: Start difference. First operand 932 states and 1269 transitions. Second operand 9 states. [2020-10-15 00:16:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:23,077 INFO L93 Difference]: Finished difference Result 1080 states and 1514 transitions. [2020-10-15 00:16:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:16:23,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 00:16:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:23,083 INFO L225 Difference]: With dead ends: 1080 [2020-10-15 00:16:23,083 INFO L226 Difference]: Without dead ends: 1075 [2020-10-15 00:16:23,084 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 00:16:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2020-10-15 00:16:23,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 951. [2020-10-15 00:16:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-10-15 00:16:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1292 transitions. [2020-10-15 00:16:23,179 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1292 transitions. Word has length 52 [2020-10-15 00:16:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:23,179 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1292 transitions. [2020-10-15 00:16:23,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:16:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1292 transitions. [2020-10-15 00:16:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:16:23,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:23,183 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 00:16:23,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:16:23,183 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:23,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1807495809, now seen corresponding path program 1 times [2020-10-15 00:16:23,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:23,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559432279] [2020-10-15 00:16:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:23,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:23,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:16:23,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-15 00:16:23,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:23,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:16:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 00:16:23,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:16:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:23,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:23,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:23,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:23,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:23,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:23,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:23,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:23,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:23,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:23,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:23,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:16:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:23,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 00:16:23,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:16:23,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:23,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:16:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:16:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:23,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:23,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:23,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:23,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:23,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:16:23,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:23,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:23,996 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 00:16:23,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559432279] [2020-10-15 00:16:23,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:23,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:16:23,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975422621] [2020-10-15 00:16:23,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:16:23,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:23,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:16:23,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:16:23,999 INFO L87 Difference]: Start difference. First operand 951 states and 1292 transitions. Second operand 12 states. [2020-10-15 00:16:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:31,676 INFO L93 Difference]: Finished difference Result 2166 states and 3028 transitions. [2020-10-15 00:16:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:16:31,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-15 00:16:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:31,688 INFO L225 Difference]: With dead ends: 2166 [2020-10-15 00:16:31,688 INFO L226 Difference]: Without dead ends: 1931 [2020-10-15 00:16:31,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:16:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2020-10-15 00:16:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1525. [2020-10-15 00:16:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-10-15 00:16:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2105 transitions. [2020-10-15 00:16:31,840 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2105 transitions. Word has length 54 [2020-10-15 00:16:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:31,840 INFO L479 AbstractCegarLoop]: Abstraction has 1525 states and 2105 transitions. [2020-10-15 00:16:31,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:16:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2105 transitions. [2020-10-15 00:16:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:16:31,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:31,847 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 00:16:31,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:16:31,847 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash 634121544, now seen corresponding path program 1 times [2020-10-15 00:16:31,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:31,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732412063] [2020-10-15 00:16:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:31,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:31,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:16:31,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-15 00:16:31,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:31,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 00:16:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:16:31,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:32,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:32,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:32,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:32,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:32,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:32,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:32,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:32,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:16:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:32,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:16:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:32,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:32,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:16:32,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:32,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:16:32,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:32,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:16:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:32,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:32,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:32,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:32,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:16:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:32,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:32,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:32,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:32,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:32,192 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 00:16:32,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732412063] [2020-10-15 00:16:32,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:32,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:16:32,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242470336] [2020-10-15 00:16:32,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:16:32,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:32,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:16:32,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:32,205 INFO L87 Difference]: Start difference. First operand 1525 states and 2105 transitions. Second operand 8 states. [2020-10-15 00:16:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:34,319 INFO L93 Difference]: Finished difference Result 2094 states and 2962 transitions. [2020-10-15 00:16:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:16:34,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 00:16:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:34,327 INFO L225 Difference]: With dead ends: 2094 [2020-10-15 00:16:34,327 INFO L226 Difference]: Without dead ends: 1680 [2020-10-15 00:16:34,332 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 00:16:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-15 00:16:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1513. [2020-10-15 00:16:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2020-10-15 00:16:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2086 transitions. [2020-10-15 00:16:34,484 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2086 transitions. Word has length 56 [2020-10-15 00:16:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:34,484 INFO L479 AbstractCegarLoop]: Abstraction has 1513 states and 2086 transitions. [2020-10-15 00:16:34,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:16:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2086 transitions. [2020-10-15 00:16:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:16:34,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:34,492 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 00:16:34,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:16:34,492 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1186438786, now seen corresponding path program 1 times [2020-10-15 00:16:34,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:34,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320547219] [2020-10-15 00:16:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:34,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:16:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-15 00:16:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:34,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:16:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:16:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:16:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:34,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:34,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:34,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:34,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:34,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:34,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:34,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:34,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:34,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:34,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:34,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:34,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:34,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:34,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:16:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:34,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:34,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:16:34,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:34,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 00:16:34,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:34,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:16:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:34,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:16:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:34,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:34,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:34,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:16:34,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:34,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:16:34,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:34,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:34,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:16:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:34,986 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 00:16:34,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320547219] [2020-10-15 00:16:34,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:34,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:16:34,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610942490] [2020-10-15 00:16:34,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:16:34,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:34,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:16:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:16:34,988 INFO L87 Difference]: Start difference. First operand 1513 states and 2086 transitions. Second operand 12 states. [2020-10-15 00:16:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:39,331 INFO L93 Difference]: Finished difference Result 1695 states and 2410 transitions. [2020-10-15 00:16:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:16:39,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-15 00:16:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:39,339 INFO L225 Difference]: With dead ends: 1695 [2020-10-15 00:16:39,339 INFO L226 Difference]: Without dead ends: 1691 [2020-10-15 00:16:39,340 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 00:16:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-10-15 00:16:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1520. [2020-10-15 00:16:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1520 states. [2020-10-15 00:16:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2095 transitions. [2020-10-15 00:16:39,470 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2095 transitions. Word has length 51 [2020-10-15 00:16:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:39,470 INFO L479 AbstractCegarLoop]: Abstraction has 1520 states and 2095 transitions. [2020-10-15 00:16:39,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:16:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2095 transitions. [2020-10-15 00:16:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:16:39,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:39,474 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 00:16:39,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:16:39,474 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1186715616, now seen corresponding path program 1 times [2020-10-15 00:16:39,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:39,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487073276] [2020-10-15 00:16:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:39,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:39,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:16:39,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:16:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-15 00:16:39,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:39,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:16:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:40,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:40,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:40,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:40,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:16:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:16:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 00:16:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:16:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:40,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:40,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:16:40,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:16:40,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:40,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:16:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:40,181 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 00:16:40,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487073276] [2020-10-15 00:16:40,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:40,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:16:40,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058236070] [2020-10-15 00:16:40,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:16:40,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:16:40,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:16:40,184 INFO L87 Difference]: Start difference. First operand 1520 states and 2095 transitions. Second operand 10 states. [2020-10-15 00:16:41,925 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-15 00:16:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:44,275 INFO L93 Difference]: Finished difference Result 1702 states and 2417 transitions. [2020-10-15 00:16:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:16:44,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-15 00:16:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:44,286 INFO L225 Difference]: With dead ends: 1702 [2020-10-15 00:16:44,286 INFO L226 Difference]: Without dead ends: 1665 [2020-10-15 00:16:44,288 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 00:16:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-10-15 00:16:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1492. [2020-10-15 00:16:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-10-15 00:16:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2061 transitions. [2020-10-15 00:16:44,472 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2061 transitions. Word has length 51 [2020-10-15 00:16:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:44,472 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 2061 transitions. [2020-10-15 00:16:44,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:16:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2061 transitions. [2020-10-15 00:16:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:16:44,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:44,479 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 00:16:44,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:16:44,479 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:44,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1504546088, now seen corresponding path program 1 times [2020-10-15 00:16:44,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:44,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227018516] [2020-10-15 00:16:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:16:45,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:16:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-15 00:16:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:16:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:45,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:45,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:45,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:45,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:45,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:45,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:16:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:45,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:45,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:16:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:16:45,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:45,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:16:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:16:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:45,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:16:45,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:16:45,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:45,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:45,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:45,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:16:45,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:45,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:45,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:45,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:45,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:45,467 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 00:16:45,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227018516] [2020-10-15 00:16:45,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:45,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:16:45,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401859702] [2020-10-15 00:16:45,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:16:45,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:45,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:16:45,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:16:45,472 INFO L87 Difference]: Start difference. First operand 1492 states and 2061 transitions. Second operand 10 states. [2020-10-15 00:16:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:47,855 INFO L93 Difference]: Finished difference Result 1730 states and 2460 transitions. [2020-10-15 00:16:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:16:47,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-15 00:16:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:47,864 INFO L225 Difference]: With dead ends: 1730 [2020-10-15 00:16:47,864 INFO L226 Difference]: Without dead ends: 1724 [2020-10-15 00:16:47,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:16:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2020-10-15 00:16:48,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1489. [2020-10-15 00:16:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-15 00:16:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2055 transitions. [2020-10-15 00:16:48,036 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2055 transitions. Word has length 54 [2020-10-15 00:16:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:48,036 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 2055 transitions. [2020-10-15 00:16:48,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:16:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2055 transitions. [2020-10-15 00:16:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:16:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:48,042 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 00:16:48,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:16:48,042 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:48,043 INFO L82 PathProgramCache]: Analyzing trace with hash -291565544, now seen corresponding path program 1 times [2020-10-15 00:16:48,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:48,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273356834] [2020-10-15 00:16:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:16:48,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-15 00:16:48,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:16:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:16:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:16:48,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:48,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:48,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:48,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:48,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:48,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:16:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:16:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 00:16:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:16:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:16:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:16:48,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:16:48,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:16:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:16:48,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:48,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:16:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:48,812 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 00:16:48,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273356834] [2020-10-15 00:16:48,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:48,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:16:48,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495768259] [2020-10-15 00:16:48,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:16:48,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:48,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:16:48,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:16:48,819 INFO L87 Difference]: Start difference. First operand 1489 states and 2055 transitions. Second operand 15 states. [2020-10-15 00:16:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:52,110 INFO L93 Difference]: Finished difference Result 1683 states and 2394 transitions. [2020-10-15 00:16:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:16:52,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-15 00:16:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:52,119 INFO L225 Difference]: With dead ends: 1683 [2020-10-15 00:16:52,119 INFO L226 Difference]: Without dead ends: 1656 [2020-10-15 00:16:52,122 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 00:16:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-10-15 00:16:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1489. [2020-10-15 00:16:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-15 00:16:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2051 transitions. [2020-10-15 00:16:52,266 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2051 transitions. Word has length 55 [2020-10-15 00:16:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:52,267 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 2051 transitions. [2020-10-15 00:16:52,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:16:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2051 transitions. [2020-10-15 00:16:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:16:52,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:52,270 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 00:16:52,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:16:52,271 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2119637056, now seen corresponding path program 1 times [2020-10-15 00:16:52,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:52,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223629565] [2020-10-15 00:16:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:16:52,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-15 00:16:52,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:16:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 00:16:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:16:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:52,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:52,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:52,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:52,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:52,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:16:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:16:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:16:52,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:16:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:16:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:16:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:16:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 00:16:52,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:16:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:16:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:52,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:52,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:16:52,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:16:52,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:52,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:16:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:52,933 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 00:16:52,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223629565] [2020-10-15 00:16:52,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:52,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:16:52,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604824416] [2020-10-15 00:16:52,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:16:52,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:52,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:16:52,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:16:52,937 INFO L87 Difference]: Start difference. First operand 1489 states and 2051 transitions. Second operand 15 states. [2020-10-15 00:16:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:56,508 INFO L93 Difference]: Finished difference Result 1674 states and 2377 transitions. [2020-10-15 00:16:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:16:56,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-15 00:16:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:56,515 INFO L225 Difference]: With dead ends: 1674 [2020-10-15 00:16:56,515 INFO L226 Difference]: Without dead ends: 1652 [2020-10-15 00:16:56,516 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 00:16:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-10-15 00:16:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1485. [2020-10-15 00:16:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-10-15 00:16:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2043 transitions. [2020-10-15 00:16:56,701 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2043 transitions. Word has length 56 [2020-10-15 00:16:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:56,702 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 2043 transitions. [2020-10-15 00:16:56,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:16:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2043 transitions. [2020-10-15 00:16:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:16:56,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:56,707 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 00:16:56,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:16:56,708 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:56,708 INFO L82 PathProgramCache]: Analyzing trace with hash 100740086, now seen corresponding path program 1 times [2020-10-15 00:16:56,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:56,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860168105] [2020-10-15 00:16:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:16:57,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-15 00:16:57,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:16:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:16:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:16:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:57,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:16:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:57,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:57,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:16:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:57,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:16:57,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:16:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:16:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 00:16:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:16:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:16:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:57,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:16:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:16:57,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:16:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:16:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:16:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:16:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:16:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:57,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:16:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:16:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:57,436 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 00:16:57,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860168105] [2020-10-15 00:16:57,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:57,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:16:57,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975375021] [2020-10-15 00:16:57,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:16:57,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:57,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:16:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:16:57,439 INFO L87 Difference]: Start difference. First operand 1485 states and 2043 transitions. Second operand 15 states. [2020-10-15 00:17:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:01,194 INFO L93 Difference]: Finished difference Result 1665 states and 2364 transitions. [2020-10-15 00:17:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:01,195 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-15 00:17:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:01,201 INFO L225 Difference]: With dead ends: 1665 [2020-10-15 00:17:01,201 INFO L226 Difference]: Without dead ends: 1643 [2020-10-15 00:17:01,203 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 00:17:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-10-15 00:17:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1476. [2020-10-15 00:17:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-10-15 00:17:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2030 transitions. [2020-10-15 00:17:01,356 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2030 transitions. Word has length 55 [2020-10-15 00:17:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:01,357 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 2030 transitions. [2020-10-15 00:17:01,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:17:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2030 transitions. [2020-10-15 00:17:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:17:01,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:01,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:01,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:17:01,361 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:01,362 INFO L82 PathProgramCache]: Analyzing trace with hash -534409564, now seen corresponding path program 1 times [2020-10-15 00:17:01,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:01,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646243555] [2020-10-15 00:17:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:01,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:17:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:02,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-15 00:17:02,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:17:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:17:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:17:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:02,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:02,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:02,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:02,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:02,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:03,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:03,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-15 00:17:03,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:03,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:17:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:17:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:03,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:17:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-15 00:17:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:03,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:17:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:03,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:03,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:03,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:17:03,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:17:03,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:03,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:03,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:03,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:03,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:03,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:03,592 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 00:17:03,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646243555] [2020-10-15 00:17:03,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:03,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:17:03,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116000005] [2020-10-15 00:17:03,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:17:03,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:03,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:17:03,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:03,595 INFO L87 Difference]: Start difference. First operand 1476 states and 2030 transitions. Second operand 19 states. [2020-10-15 00:17:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:07,781 INFO L93 Difference]: Finished difference Result 1671 states and 2380 transitions. [2020-10-15 00:17:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:17:07,781 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-15 00:17:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:07,789 INFO L225 Difference]: With dead ends: 1671 [2020-10-15 00:17:07,789 INFO L226 Difference]: Without dead ends: 1648 [2020-10-15 00:17:07,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:17:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-10-15 00:17:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1481. [2020-10-15 00:17:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-10-15 00:17:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2041 transitions. [2020-10-15 00:17:07,994 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2041 transitions. Word has length 59 [2020-10-15 00:17:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:07,995 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2041 transitions. [2020-10-15 00:17:07,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:17:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2041 transitions. [2020-10-15 00:17:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:17:07,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:07,999 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 00:17:07,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:17:07,999 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1368947104, now seen corresponding path program 1 times [2020-10-15 00:17:08,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:08,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046882462] [2020-10-15 00:17:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:09,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:17:09,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-15 00:17:09,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:09,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:17:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:17:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:17:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:09,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:09,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:09,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:09,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:09,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:09,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:09,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:09,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:17:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-15 00:17:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:09,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:17:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:17:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:17:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-15 00:17:10,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:17:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:17:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:17:10,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:17:10,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:10,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:10,206 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 00:17:10,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046882462] [2020-10-15 00:17:10,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:10,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:17:10,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460545375] [2020-10-15 00:17:10,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:17:10,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:17:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:10,210 INFO L87 Difference]: Start difference. First operand 1481 states and 2041 transitions. Second operand 19 states. [2020-10-15 00:17:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:14,706 INFO L93 Difference]: Finished difference Result 1671 states and 2378 transitions. [2020-10-15 00:17:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:17:14,707 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-15 00:17:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:14,713 INFO L225 Difference]: With dead ends: 1671 [2020-10-15 00:17:14,713 INFO L226 Difference]: Without dead ends: 1648 [2020-10-15 00:17:14,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:17:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-10-15 00:17:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1481. [2020-10-15 00:17:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-10-15 00:17:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2040 transitions. [2020-10-15 00:17:14,885 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2040 transitions. Word has length 62 [2020-10-15 00:17:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:14,885 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2040 transitions. [2020-10-15 00:17:14,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:17:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2040 transitions. [2020-10-15 00:17:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:17:14,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:14,890 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 00:17:14,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:17:14,890 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:14,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:14,890 INFO L82 PathProgramCache]: Analyzing trace with hash -195834208, now seen corresponding path program 1 times [2020-10-15 00:17:14,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:14,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500562036] [2020-10-15 00:17:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:14,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:17:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-15 00:17:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:17:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:17:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:17:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:15,526 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-15 00:17:15,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:15,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:15,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:17:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-15 00:17:15,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:17:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:17:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:15,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:17:15,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 00:17:15,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:17:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:16,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:17:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:17:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 00:17:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:16,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:16,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:16,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:16,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:16,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:16,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:16,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:16,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:16,185 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 00:17:16,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500562036] [2020-10-15 00:17:16,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:16,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:17:16,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277503097] [2020-10-15 00:17:16,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:17:16,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:16,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:17:16,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:16,188 INFO L87 Difference]: Start difference. First operand 1481 states and 2040 transitions. Second operand 19 states. [2020-10-15 00:17:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:20,831 INFO L93 Difference]: Finished difference Result 1672 states and 2379 transitions. [2020-10-15 00:17:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:17:20,832 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-15 00:17:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:20,839 INFO L225 Difference]: With dead ends: 1672 [2020-10-15 00:17:20,839 INFO L226 Difference]: Without dead ends: 1648 [2020-10-15 00:17:20,846 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 00:17:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-10-15 00:17:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1479. [2020-10-15 00:17:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-15 00:17:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2035 transitions. [2020-10-15 00:17:21,052 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2035 transitions. Word has length 62 [2020-10-15 00:17:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:21,052 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2035 transitions. [2020-10-15 00:17:21,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:17:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2035 transitions. [2020-10-15 00:17:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:17:21,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:21,056 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 00:17:21,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:17:21,057 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:21,057 INFO L82 PathProgramCache]: Analyzing trace with hash 167190310, now seen corresponding path program 1 times [2020-10-15 00:17:21,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:21,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596088739] [2020-10-15 00:17:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:21,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:17:21,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-15 00:17:21,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:21,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:17:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:17:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:21,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:21,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:21,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:21,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:21,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:21,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:21,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:21,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:21,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:21,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:21,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:21,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:21,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:21,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-15 00:17:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:21,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:17:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:17:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:17:22,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-15 00:17:22,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:17:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:17:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:17:22,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:22,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596088739] [2020-10-15 00:17:22,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:22,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:17:22,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118083975] [2020-10-15 00:17:22,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:17:22,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:17:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:22,366 INFO L87 Difference]: Start difference. First operand 1479 states and 2035 transitions. Second operand 19 states. [2020-10-15 00:17:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:26,891 INFO L93 Difference]: Finished difference Result 1671 states and 2376 transitions. [2020-10-15 00:17:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:17:26,892 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-15 00:17:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:26,897 INFO L225 Difference]: With dead ends: 1671 [2020-10-15 00:17:26,897 INFO L226 Difference]: Without dead ends: 1646 [2020-10-15 00:17:26,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:17:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2020-10-15 00:17:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1479. [2020-10-15 00:17:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-10-15 00:17:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2029 transitions. [2020-10-15 00:17:27,075 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2029 transitions. Word has length 59 [2020-10-15 00:17:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:27,076 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2029 transitions. [2020-10-15 00:17:27,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:17:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2029 transitions. [2020-10-15 00:17:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:17:27,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:27,080 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 00:17:27,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:17:27,080 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:27,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1190823714, now seen corresponding path program 1 times [2020-10-15 00:17:27,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:27,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683124992] [2020-10-15 00:17:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:17:27,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-15 00:17:27,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:17:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 00:17:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:17:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:27,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:27,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:17:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 00:17:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:17:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:17:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:17:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:17:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:17:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:27,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:27,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:17:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,753 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 00:17:27,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683124992] [2020-10-15 00:17:27,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:27,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 00:17:27,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064985991] [2020-10-15 00:17:27,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:17:27,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:27,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:17:27,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:17:27,755 INFO L87 Difference]: Start difference. First operand 1479 states and 2029 transitions. Second operand 16 states. [2020-10-15 00:17:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:32,904 INFO L93 Difference]: Finished difference Result 1666 states and 2359 transitions. [2020-10-15 00:17:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:17:32,904 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-15 00:17:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:32,910 INFO L225 Difference]: With dead ends: 1666 [2020-10-15 00:17:32,910 INFO L226 Difference]: Without dead ends: 1640 [2020-10-15 00:17:32,911 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 00:17:32,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-10-15 00:17:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1473. [2020-10-15 00:17:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-10-15 00:17:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2019 transitions. [2020-10-15 00:17:33,061 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2019 transitions. Word has length 58 [2020-10-15 00:17:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:33,061 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 2019 transitions. [2020-10-15 00:17:33,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:17:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2019 transitions. [2020-10-15 00:17:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:17:33,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:33,066 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 00:17:33,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:17:33,066 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash -59454133, now seen corresponding path program 1 times [2020-10-15 00:17:33,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:33,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769535669] [2020-10-15 00:17:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:17:33,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-15 00:17:33,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:17:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:17:33,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:33,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:33,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:33,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:33,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:17:33,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 00:17:33,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:17:33,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 00:17:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:17:33,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:33,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:33,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:33,902 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 00:17:33,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769535669] [2020-10-15 00:17:33,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:33,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:17:33,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452312226] [2020-10-15 00:17:33,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:17:33,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:33,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:17:33,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:33,904 INFO L87 Difference]: Start difference. First operand 1473 states and 2019 transitions. Second operand 15 states. [2020-10-15 00:17:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:37,990 INFO L93 Difference]: Finished difference Result 1671 states and 2366 transitions. [2020-10-15 00:17:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:37,991 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-15 00:17:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:37,996 INFO L225 Difference]: With dead ends: 1671 [2020-10-15 00:17:37,996 INFO L226 Difference]: Without dead ends: 1640 [2020-10-15 00:17:37,998 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 00:17:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-10-15 00:17:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1473. [2020-10-15 00:17:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-10-15 00:17:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2015 transitions. [2020-10-15 00:17:38,139 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2015 transitions. Word has length 59 [2020-10-15 00:17:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:38,139 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 2015 transitions. [2020-10-15 00:17:38,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:17:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2015 transitions. [2020-10-15 00:17:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:17:38,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:38,143 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 00:17:38,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:17:38,144 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1829669234, now seen corresponding path program 1 times [2020-10-15 00:17:38,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:38,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037285798] [2020-10-15 00:17:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:17:38,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-15 00:17:38,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 00:17:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:17:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:38,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:38,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:38,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:38,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:38,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:17:38,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-15 00:17:38,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:17:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:38,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-15 00:17:38,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:17:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,066 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 00:17:39,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037285798] [2020-10-15 00:17:39,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:39,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:17:39,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720288412] [2020-10-15 00:17:39,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:17:39,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:39,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:17:39,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:39,069 INFO L87 Difference]: Start difference. First operand 1473 states and 2015 transitions. Second operand 15 states. [2020-10-15 00:17:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:42,549 INFO L93 Difference]: Finished difference Result 1662 states and 2347 transitions. [2020-10-15 00:17:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:42,549 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-15 00:17:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:42,555 INFO L225 Difference]: With dead ends: 1662 [2020-10-15 00:17:42,555 INFO L226 Difference]: Without dead ends: 1625 [2020-10-15 00:17:42,557 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 00:17:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-10-15 00:17:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1461. [2020-10-15 00:17:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-10-15 00:17:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1991 transitions. [2020-10-15 00:17:42,702 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1991 transitions. Word has length 59 [2020-10-15 00:17:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:42,702 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1991 transitions. [2020-10-15 00:17:42,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:17:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1991 transitions. [2020-10-15 00:17:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:17:42,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:42,704 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 00:17:42,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:17:42,705 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2110252174, now seen corresponding path program 1 times [2020-10-15 00:17:42,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:42,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45019883] [2020-10-15 00:17:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:17:43,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:43,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-15 00:17:43,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:17:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:17:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:43,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:43,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:17:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:44,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-15 00:17:44,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:44,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:44,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:17:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:44,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:17:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-15 00:17:44,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:17:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:17:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 00:17:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:17:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:44,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:44,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:44,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:45,002 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 00:17:45,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45019883] [2020-10-15 00:17:45,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:45,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-15 00:17:45,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190863259] [2020-10-15 00:17:45,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:17:45,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:45,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:17:45,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:17:45,005 INFO L87 Difference]: Start difference. First operand 1461 states and 1991 transitions. Second operand 18 states. [2020-10-15 00:17:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:50,059 INFO L93 Difference]: Finished difference Result 1905 states and 2751 transitions. [2020-10-15 00:17:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:17:50,060 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-15 00:17:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:50,065 INFO L225 Difference]: With dead ends: 1905 [2020-10-15 00:17:50,065 INFO L226 Difference]: Without dead ends: 1736 [2020-10-15 00:17:50,067 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 00:17:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2020-10-15 00:17:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1473. [2020-10-15 00:17:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-10-15 00:17:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2019 transitions. [2020-10-15 00:17:50,211 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2019 transitions. Word has length 60 [2020-10-15 00:17:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:50,211 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 2019 transitions. [2020-10-15 00:17:50,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:17:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2019 transitions. [2020-10-15 00:17:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:17:50,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:50,215 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 00:17:50,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:17:50,216 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash 102566447, now seen corresponding path program 1 times [2020-10-15 00:17:50,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:50,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798989231] [2020-10-15 00:17:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:17:50,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-15 00:17:50,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:17:50,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:17:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:50,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:17:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-15 00:17:50,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:17:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:17:50,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 00:17:50,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:17:50,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:51,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:17:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:51,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:51,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:51,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:51,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:51,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:51,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:51,038 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 00:17:51,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798989231] [2020-10-15 00:17:51,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:51,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:17:51,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910222470] [2020-10-15 00:17:51,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:17:51,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:51,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:17:51,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:51,040 INFO L87 Difference]: Start difference. First operand 1473 states and 2019 transitions. Second operand 15 states. [2020-10-15 00:17:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:54,952 INFO L93 Difference]: Finished difference Result 1683 states and 2398 transitions. [2020-10-15 00:17:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:54,953 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-15 00:17:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:54,958 INFO L225 Difference]: With dead ends: 1683 [2020-10-15 00:17:54,958 INFO L226 Difference]: Without dead ends: 1633 [2020-10-15 00:17:54,959 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 00:17:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-15 00:17:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1465. [2020-10-15 00:17:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:17:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2001 transitions. [2020-10-15 00:17:55,095 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2001 transitions. Word has length 60 [2020-10-15 00:17:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:55,095 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2001 transitions. [2020-10-15 00:17:55,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:17:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2001 transitions. [2020-10-15 00:17:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:17:55,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:55,098 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 00:17:55,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:17:55,098 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash -260981663, now seen corresponding path program 1 times [2020-10-15 00:17:55,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:55,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323129659] [2020-10-15 00:17:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:17:55,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-15 00:17:55,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:17:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:17:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:55,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:55,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:55,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:55,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:55,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:17:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-15 00:17:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:17:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:17:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:17:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:17:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:17:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:55,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:55,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:55,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:55,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:55,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:55,916 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 00:17:55,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323129659] [2020-10-15 00:17:55,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:55,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:17:55,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350689798] [2020-10-15 00:17:55,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:17:55,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:55,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:17:55,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:55,919 INFO L87 Difference]: Start difference. First operand 1465 states and 2001 transitions. Second operand 15 states. [2020-10-15 00:17:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:59,722 INFO L93 Difference]: Finished difference Result 1655 states and 2344 transitions. [2020-10-15 00:17:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:59,722 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-15 00:17:59,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:59,727 INFO L225 Difference]: With dead ends: 1655 [2020-10-15 00:17:59,727 INFO L226 Difference]: Without dead ends: 1625 [2020-10-15 00:17:59,728 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 00:17:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-10-15 00:17:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1457. [2020-10-15 00:17:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-15 00:17:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1985 transitions. [2020-10-15 00:17:59,833 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1985 transitions. Word has length 60 [2020-10-15 00:17:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:59,833 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 1985 transitions. [2020-10-15 00:17:59,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:17:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1985 transitions. [2020-10-15 00:17:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:17:59,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:59,836 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 00:17:59,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:17:59,836 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:59,836 INFO L82 PathProgramCache]: Analyzing trace with hash -836538794, now seen corresponding path program 1 times [2020-10-15 00:17:59,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:59,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485109244] [2020-10-15 00:17:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:18:00,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-15 00:18:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:18:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:00,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:00,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:00,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:00,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:18:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-15 00:18:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:18:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:18:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:18:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:18:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:18:00,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:00,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:18:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:00,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:00,807 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 00:18:00,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485109244] [2020-10-15 00:18:00,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:00,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-15 00:18:00,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583572697] [2020-10-15 00:18:00,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:18:00,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:00,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:18:00,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:18:00,810 INFO L87 Difference]: Start difference. First operand 1457 states and 1985 transitions. Second operand 18 states. [2020-10-15 00:18:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:04,946 INFO L93 Difference]: Finished difference Result 1687 states and 2423 transitions. [2020-10-15 00:18:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:18:04,946 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-15 00:18:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:04,952 INFO L225 Difference]: With dead ends: 1687 [2020-10-15 00:18:04,953 INFO L226 Difference]: Without dead ends: 1653 [2020-10-15 00:18:04,954 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 00:18:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-10-15 00:18:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1465. [2020-10-15 00:18:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:18:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2021 transitions. [2020-10-15 00:18:05,103 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2021 transitions. Word has length 61 [2020-10-15 00:18:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:05,104 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2021 transitions. [2020-10-15 00:18:05,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:18:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2021 transitions. [2020-10-15 00:18:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:18:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:05,107 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 00:18:05,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:18:05,107 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash -640820552, now seen corresponding path program 1 times [2020-10-15 00:18:05,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:05,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695070244] [2020-10-15 00:18:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:18:05,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-15 00:18:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 00:18:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:05,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:18:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-15 00:18:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:18:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:18:06,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:18:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:07,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:18:07,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:07,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:07,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:07,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,131 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 00:18:07,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695070244] [2020-10-15 00:18:07,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:07,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:18:07,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638197393] [2020-10-15 00:18:07,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:18:07,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:07,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:18:07,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:07,133 INFO L87 Difference]: Start difference. First operand 1465 states and 2021 transitions. Second operand 19 states. [2020-10-15 00:18:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:11,720 INFO L93 Difference]: Finished difference Result 1656 states and 2375 transitions. [2020-10-15 00:18:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:18:11,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-15 00:18:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:11,726 INFO L225 Difference]: With dead ends: 1656 [2020-10-15 00:18:11,726 INFO L226 Difference]: Without dead ends: 1633 [2020-10-15 00:18:11,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:18:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-15 00:18:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1465. [2020-10-15 00:18:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:18:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2020 transitions. [2020-10-15 00:18:11,843 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2020 transitions. Word has length 63 [2020-10-15 00:18:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:11,843 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2020 transitions. [2020-10-15 00:18:11,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:18:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2020 transitions. [2020-10-15 00:18:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:18:11,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:11,847 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 00:18:11,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:18:11,847 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:11,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1325266492, now seen corresponding path program 1 times [2020-10-15 00:18:11,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:11,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641865431] [2020-10-15 00:18:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 00:18:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:12,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:12,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:12,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:12,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:12,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:12,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:12,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:12,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:18:13,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-15 00:18:13,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:18:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:18:13,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-15 00:18:13,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:18:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:13,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:13,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:13,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:13,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:18:13,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:14,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,015 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 00:18:14,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641865431] [2020-10-15 00:18:14,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:14,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-15 00:18:14,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922113648] [2020-10-15 00:18:14,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:18:14,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:14,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:18:14,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:18:14,017 INFO L87 Difference]: Start difference. First operand 1465 states and 2020 transitions. Second operand 20 states. [2020-10-15 00:18:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:18,393 INFO L93 Difference]: Finished difference Result 1656 states and 2374 transitions. [2020-10-15 00:18:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:18:18,394 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-15 00:18:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:18,400 INFO L225 Difference]: With dead ends: 1656 [2020-10-15 00:18:18,400 INFO L226 Difference]: Without dead ends: 1633 [2020-10-15 00:18:18,401 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 00:18:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-15 00:18:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1465. [2020-10-15 00:18:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:18:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2019 transitions. [2020-10-15 00:18:18,516 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2019 transitions. Word has length 67 [2020-10-15 00:18:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:18,516 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2019 transitions. [2020-10-15 00:18:18,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:18:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2019 transitions. [2020-10-15 00:18:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:18:18,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:18,519 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 00:18:18,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:18:18,519 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:18,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1545180893, now seen corresponding path program 1 times [2020-10-15 00:18:18,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:18,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971620619] [2020-10-15 00:18:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:19,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 00:18:19,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:19,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-15 00:18:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:19,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 00:18:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:18:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:19,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:19,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:19,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:19,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:19,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:19,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:18:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-15 00:18:19,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:19,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:18:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:18:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:19,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:18:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-15 00:18:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:19,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:18:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:20,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:20,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:18:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:20,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:20,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:20,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:20,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:18:20,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:20,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:20,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:20,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:20,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:20,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:20,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:20,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:20,189 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 00:18:20,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971620619] [2020-10-15 00:18:20,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:20,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-15 00:18:20,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044521746] [2020-10-15 00:18:20,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:18:20,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:20,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:18:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:18:20,193 INFO L87 Difference]: Start difference. First operand 1465 states and 2019 transitions. Second operand 20 states. [2020-10-15 00:18:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:25,616 INFO L93 Difference]: Finished difference Result 1656 states and 2372 transitions. [2020-10-15 00:18:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:18:25,617 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-15 00:18:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:25,621 INFO L225 Difference]: With dead ends: 1656 [2020-10-15 00:18:25,622 INFO L226 Difference]: Without dead ends: 1633 [2020-10-15 00:18:25,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:18:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-15 00:18:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1465. [2020-10-15 00:18:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:18:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2018 transitions. [2020-10-15 00:18:25,736 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2018 transitions. Word has length 66 [2020-10-15 00:18:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:25,736 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2018 transitions. [2020-10-15 00:18:25,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:18:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2018 transitions. [2020-10-15 00:18:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:18:25,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:25,739 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 00:18:25,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:18:25,739 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1231897811, now seen corresponding path program 1 times [2020-10-15 00:18:25,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:25,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720041104] [2020-10-15 00:18:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:25,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:18:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:18:26,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:26,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:26,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:26,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:26,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:26,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:26,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:18:26,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-15 00:18:26,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:18:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:18:26,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:18:26,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:18:26,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:18:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:18:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:26,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:18:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,704 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 00:18:26,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720041104] [2020-10-15 00:18:26,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:26,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 00:18:26,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227317323] [2020-10-15 00:18:26,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:18:26,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:26,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:18:26,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:26,706 INFO L87 Difference]: Start difference. First operand 1465 states and 2018 transitions. Second operand 19 states. [2020-10-15 00:18:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:31,890 INFO L93 Difference]: Finished difference Result 1657 states and 2372 transitions. [2020-10-15 00:18:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:18:31,891 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-15 00:18:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:31,895 INFO L225 Difference]: With dead ends: 1657 [2020-10-15 00:18:31,895 INFO L226 Difference]: Without dead ends: 1633 [2020-10-15 00:18:31,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:18:31,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-15 00:18:32,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1465. [2020-10-15 00:18:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1465 states. [2020-10-15 00:18:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2014 transitions. [2020-10-15 00:18:32,008 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2014 transitions. Word has length 62 [2020-10-15 00:18:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:32,009 INFO L479 AbstractCegarLoop]: Abstraction has 1465 states and 2014 transitions. [2020-10-15 00:18:32,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:18:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2014 transitions. [2020-10-15 00:18:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:18:32,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:32,013 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 00:18:32,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:18:32,013 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:32,014 INFO L82 PathProgramCache]: Analyzing trace with hash 228864083, now seen corresponding path program 1 times [2020-10-15 00:18:32,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:32,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929610258] [2020-10-15 00:18:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 00:18:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:18:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:32,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:32,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:32,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:32,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:18:32,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:18:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:32,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:32,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:32,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:32,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:32,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:32,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:18:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:33,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:33,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:33,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:33,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:33,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:33,014 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 00:18:33,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929610258] [2020-10-15 00:18:33,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:33,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 00:18:33,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805604477] [2020-10-15 00:18:33,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:18:33,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:33,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:18:33,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:33,016 INFO L87 Difference]: Start difference. First operand 1465 states and 2014 transitions. Second operand 16 states.