/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 02:04:25,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 02:04:25,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 02:04:25,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 02:04:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 02:04:25,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 02:04:25,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 02:04:25,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 02:04:25,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 02:04:25,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 02:04:25,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 02:04:25,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 02:04:25,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 02:04:25,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 02:04:25,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 02:04:25,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 02:04:25,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 02:04:25,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 02:04:25,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 02:04:25,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 02:04:25,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 02:04:25,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 02:04:25,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 02:04:25,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 02:04:25,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 02:04:25,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 02:04:25,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 02:04:25,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 02:04:25,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 02:04:25,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 02:04:25,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 02:04:25,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 02:04:25,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 02:04:25,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 02:04:25,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 02:04:25,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 02:04:25,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 02:04:25,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 02:04:25,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 02:04:25,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 02:04:25,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 02:04:25,946 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 [2020-10-27 02:04:25,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 02:04:25,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 02:04:25,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 02:04:25,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 02:04:25,978 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 02:04:25,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 02:04:25,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 02:04:25,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 02:04:25,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 02:04:25,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 02:04:25,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 02:04:25,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 02:04:25,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 02:04:25,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 02:04:25,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 02:04:25,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 02:04:25,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 02:04:25,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 02:04:25,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 02:04:25,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 02:04:25,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 02:04:25,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 02:04:25,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 02:04:25,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 02:04:25,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 02:04:25,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 02:04:25,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 02:04:25,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 02:04:25,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 02:04:25,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 02:04:26,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 02:04:26,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 02:04:26,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 02:04:26,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 02:04:26,431 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 02:04:26,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-2.c [2020-10-27 02:04:26,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4595cf32/f4aa8a36e6214e86afbeec299e863510/FLAG13dc8d9b2 [2020-10-27 02:04:27,228 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 02:04:27,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-2.c [2020-10-27 02:04:27,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4595cf32/f4aa8a36e6214e86afbeec299e863510/FLAG13dc8d9b2 [2020-10-27 02:04:27,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4595cf32/f4aa8a36e6214e86afbeec299e863510 [2020-10-27 02:04:27,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 02:04:27,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 02:04:27,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 02:04:27,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 02:04:27,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 02:04:27,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:04:27" (1/1) ... [2020-10-27 02:04:27,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db8479f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:27, skipping insertion in model container [2020-10-27 02:04:27,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:04:27" (1/1) ... [2020-10-27 02:04:27,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 02:04:27,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 02:04:28,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 02:04:28,025 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 02:04:28,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 02:04:28,152 INFO L208 MainTranslator]: Completed translation [2020-10-27 02:04:28,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28 WrapperNode [2020-10-27 02:04:28,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 02:04:28,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 02:04:28,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 02:04:28,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 02:04:28,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (1/1) ... [2020-10-27 02:04:28,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 02:04:28,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 02:04:28,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 02:04:28,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 02:04:28,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (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 [2020-10-27 02:04:28,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 02:04:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 02:04:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 02:04:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-27 02:04:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-27 02:04:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-27 02:04:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-27 02:04:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-27 02:04:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-27 02:04:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-27 02:04:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-27 02:04:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-27 02:04:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-27 02:04:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 02:04:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-27 02:04:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-27 02:04:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-27 02:04:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-27 02:04:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-27 02:04:28,431 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-27 02:04:28,431 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-27 02:04:28,431 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-27 02:04:28,431 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-27 02:04:28,431 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-27 02:04:28,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-27 02:04:28,432 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-27 02:04:28,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-27 02:04:28,432 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2020-10-27 02:04:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 02:04:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 02:04:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 02:04:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 02:04:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 02:04:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 02:04:28,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 02:04:28,434 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-27 02:04:28,434 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-27 02:04:28,434 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-27 02:04:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-27 02:04:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-27 02:04:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-27 02:04:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-27 02:04:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-27 02:04:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-27 02:04:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-27 02:04:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-27 02:04:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-27 02:04:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-27 02:04:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-27 02:04:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-27 02:04:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-27 02:04:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-27 02:04:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-27 02:04:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-27 02:04:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-27 02:04:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-27 02:04:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-27 02:04:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 02:04:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-27 02:04:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2020-10-27 02:04:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 02:04:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 02:04:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 02:04:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 02:04:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 02:04:28,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 02:04:28,895 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:28,968 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:28,968 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:28,998 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,052 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:29,052 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:29,068 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,373 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-27 02:04:29,374 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-27 02:04:29,375 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,500 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2020-10-27 02:04:29,501 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2020-10-27 02:04:29,521 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,552 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-27 02:04:29,552 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-27 02:04:29,679 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,693 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:29,693 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:29,693 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,708 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:29,709 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:29,709 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,727 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:29,727 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:29,862 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:29,910 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-27 02:04:29,911 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-27 02:04:29,970 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:30,002 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:30,002 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:30,002 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:30,019 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:30,020 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:30,020 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:04:30,032 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:04:30,032 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:04:30,059 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 02:04:30,059 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 02:04:30,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:04:30 BoogieIcfgContainer [2020-10-27 02:04:30,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 02:04:30,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 02:04:30,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 02:04:30,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 02:04:30,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:04:27" (1/3) ... [2020-10-27 02:04:30,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d22efc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:04:30, skipping insertion in model container [2020-10-27 02:04:30,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:04:28" (2/3) ... [2020-10-27 02:04:30,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d22efc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:04:30, skipping insertion in model container [2020-10-27 02:04:30,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:04:30" (3/3) ... [2020-10-27 02:04:30,071 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2020-10-27 02:04:30,083 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 02:04:30,089 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 02:04:30,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 02:04:30,135 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 02:04:30,135 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 02:04:30,135 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 02:04:30,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 02:04:30,136 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 02:04:30,136 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 02:04:30,136 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 02:04:30,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 02:04:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-10-27 02:04:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 02:04:30,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:30,173 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] [2020-10-27 02:04:30,173 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash -816301389, now seen corresponding path program 1 times [2020-10-27 02:04:30,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:30,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805256715] [2020-10-27 02:04:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 02:04:31,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:31,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-27 02:04:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 02:04:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:04:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 02:04:31,430 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:31,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 02:04:31,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 02:04:31,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:31,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:31,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805256715] [2020-10-27 02:04:31,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:31,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 02:04:31,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914077180] [2020-10-27 02:04:31,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 02:04:31,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:31,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 02:04:31,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 02:04:31,608 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 5 states. [2020-10-27 02:04:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:34,161 INFO L93 Difference]: Finished difference Result 543 states and 785 transitions. [2020-10-27 02:04:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 02:04:34,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 02:04:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:34,181 INFO L225 Difference]: With dead ends: 543 [2020-10-27 02:04:34,182 INFO L226 Difference]: Without dead ends: 323 [2020-10-27 02:04:34,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 02:04:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-27 02:04:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 293. [2020-10-27 02:04:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-27 02:04:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 386 transitions. [2020-10-27 02:04:34,297 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 386 transitions. Word has length 21 [2020-10-27 02:04:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:34,298 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 386 transitions. [2020-10-27 02:04:34,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 02:04:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 386 transitions. [2020-10-27 02:04:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 02:04:34,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:34,300 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] [2020-10-27 02:04:34,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 02:04:34,301 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1933721082, now seen corresponding path program 1 times [2020-10-27 02:04:34,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:34,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329739758] [2020-10-27 02:04:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:34,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:34,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 02:04:34,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 02:04:34,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:04:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 02:04:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:34,953 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:34,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:34,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:34,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:34,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:04:34,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:34,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:34,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:35,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:04:35,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:35,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:35,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:35,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329739758] [2020-10-27 02:04:35,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:35,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:04:35,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584072372] [2020-10-27 02:04:35,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:04:35,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:35,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:04:35,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:04:35,156 INFO L87 Difference]: Start difference. First operand 293 states and 386 transitions. Second operand 6 states. [2020-10-27 02:04:35,475 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:04:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:39,834 INFO L93 Difference]: Finished difference Result 640 states and 859 transitions. [2020-10-27 02:04:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:04:39,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-27 02:04:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:39,845 INFO L225 Difference]: With dead ends: 640 [2020-10-27 02:04:39,846 INFO L226 Difference]: Without dead ends: 478 [2020-10-27 02:04:39,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-27 02:04:39,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 430. [2020-10-27 02:04:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-27 02:04:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 571 transitions. [2020-10-27 02:04:39,928 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 571 transitions. Word has length 29 [2020-10-27 02:04:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:39,929 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 571 transitions. [2020-10-27 02:04:39,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:04:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 571 transitions. [2020-10-27 02:04:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 02:04:39,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:39,930 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] [2020-10-27 02:04:39,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 02:04:39,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:39,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:39,931 INFO L82 PathProgramCache]: Analyzing trace with hash -151344005, now seen corresponding path program 1 times [2020-10-27 02:04:39,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:39,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942686992] [2020-10-27 02:04:39,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:40,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:40,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 02:04:40,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:40,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-27 02:04:40,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:04:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:04:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:40,576 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:40,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:40,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:40,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:40,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 02:04:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:40,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:40,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:40,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942686992] [2020-10-27 02:04:40,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:40,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:04:40,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212858430] [2020-10-27 02:04:40,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:04:40,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:40,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:04:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:04:40,733 INFO L87 Difference]: Start difference. First operand 430 states and 571 transitions. Second operand 6 states. [2020-10-27 02:04:40,996 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:44,228 INFO L93 Difference]: Finished difference Result 946 states and 1260 transitions. [2020-10-27 02:04:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:04:44,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 02:04:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:44,236 INFO L225 Difference]: With dead ends: 946 [2020-10-27 02:04:44,236 INFO L226 Difference]: Without dead ends: 677 [2020-10-27 02:04:44,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-10-27 02:04:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 633. [2020-10-27 02:04:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-27 02:04:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 846 transitions. [2020-10-27 02:04:44,354 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 846 transitions. Word has length 31 [2020-10-27 02:04:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:44,354 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 846 transitions. [2020-10-27 02:04:44,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:04:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 846 transitions. [2020-10-27 02:04:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 02:04:44,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:44,357 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] [2020-10-27 02:04:44,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 02:04:44,357 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2073555826, now seen corresponding path program 1 times [2020-10-27 02:04:44,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:44,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994833200] [2020-10-27 02:04:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 02:04:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 02:04:44,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:04:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 02:04:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,924 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:44,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:04:44,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:45,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994833200] [2020-10-27 02:04:45,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:45,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:04:45,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137694048] [2020-10-27 02:04:45,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:04:45,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:45,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:04:45,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:04:45,093 INFO L87 Difference]: Start difference. First operand 633 states and 846 transitions. Second operand 6 states. [2020-10-27 02:04:45,352 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:48,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:48,092 INFO L93 Difference]: Finished difference Result 742 states and 982 transitions. [2020-10-27 02:04:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:04:48,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 02:04:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:48,099 INFO L225 Difference]: With dead ends: 742 [2020-10-27 02:04:48,099 INFO L226 Difference]: Without dead ends: 723 [2020-10-27 02:04:48,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-27 02:04:48,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 671. [2020-10-27 02:04:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-27 02:04:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 895 transitions. [2020-10-27 02:04:48,174 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 895 transitions. Word has length 35 [2020-10-27 02:04:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:48,175 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 895 transitions. [2020-10-27 02:04:48,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:04:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 895 transitions. [2020-10-27 02:04:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 02:04:48,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:48,177 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] [2020-10-27 02:04:48,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 02:04:48,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:48,178 INFO L82 PathProgramCache]: Analyzing trace with hash -384837830, now seen corresponding path program 1 times [2020-10-27 02:04:48,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:48,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449195047] [2020-10-27 02:04:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:48,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 02:04:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:04:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-27 02:04:49,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 02:04:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,798 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:04:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:49,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:49,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:49,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 02:04:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:50,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:50,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:50,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:50,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:04:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:50,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449195047] [2020-10-27 02:04:50,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:50,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:04:50,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173230996] [2020-10-27 02:04:50,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:04:50,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:04:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:04:50,016 INFO L87 Difference]: Start difference. First operand 671 states and 895 transitions. Second operand 9 states. [2020-10-27 02:04:50,258 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:04:50,847 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 02:04:51,055 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-27 02:04:51,569 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:52,751 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:04:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:56,307 INFO L93 Difference]: Finished difference Result 1353 states and 1800 transitions. [2020-10-27 02:04:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:04:56,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-27 02:04:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:56,316 INFO L225 Difference]: With dead ends: 1353 [2020-10-27 02:04:56,316 INFO L226 Difference]: Without dead ends: 911 [2020-10-27 02:04:56,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:04:56,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-27 02:04:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 728. [2020-10-27 02:04:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-27 02:04:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 966 transitions. [2020-10-27 02:04:56,412 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 966 transitions. Word has length 42 [2020-10-27 02:04:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:56,413 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 966 transitions. [2020-10-27 02:04:56,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:04:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 966 transitions. [2020-10-27 02:04:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 02:04:56,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:56,415 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] [2020-10-27 02:04:56,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 02:04:56,416 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:56,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1174477720, now seen corresponding path program 1 times [2020-10-27 02:04:56,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:56,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951274125] [2020-10-27 02:04:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 02:04:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 02:04:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:04:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:04:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,833 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:56,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:56,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:56,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:56,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 02:04:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:56,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951274125] [2020-10-27 02:04:56,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:56,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:04:56,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787927546] [2020-10-27 02:04:56,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:04:56,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:56,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:04:56,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:04:56,987 INFO L87 Difference]: Start difference. First operand 728 states and 966 transitions. Second operand 6 states. [2020-10-27 02:04:57,262 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:04:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:59,921 INFO L93 Difference]: Finished difference Result 756 states and 1001 transitions. [2020-10-27 02:04:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:04:59,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-27 02:04:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:59,928 INFO L225 Difference]: With dead ends: 756 [2020-10-27 02:04:59,928 INFO L226 Difference]: Without dead ends: 752 [2020-10-27 02:04:59,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 02:04:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-27 02:05:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 739. [2020-10-27 02:05:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-10-27 02:05:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 980 transitions. [2020-10-27 02:05:00,026 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 980 transitions. Word has length 41 [2020-10-27 02:05:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:00,026 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 980 transitions. [2020-10-27 02:05:00,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:05:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 980 transitions. [2020-10-27 02:05:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 02:05:00,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:00,028 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] [2020-10-27 02:05:00,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 02:05:00,028 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1595991310, now seen corresponding path program 1 times [2020-10-27 02:05:00,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:00,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603362194] [2020-10-27 02:05:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 02:05:00,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 02:05:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:05:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:05:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,408 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:00,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:05:00,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:00,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:00,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:05:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 02:05:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 02:05:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:05:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:05:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:00,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:00,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:00,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:05:00,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:00,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603362194] [2020-10-27 02:05:00,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:00,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:05:00,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249921230] [2020-10-27 02:05:00,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:05:00,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:05:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:05:00,649 INFO L87 Difference]: Start difference. First operand 739 states and 980 transitions. Second operand 8 states. [2020-10-27 02:05:00,946 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:03,860 INFO L93 Difference]: Finished difference Result 810 states and 1066 transitions. [2020-10-27 02:05:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 02:05:03,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-27 02:05:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:03,867 INFO L225 Difference]: With dead ends: 810 [2020-10-27 02:05:03,868 INFO L226 Difference]: Without dead ends: 804 [2020-10-27 02:05:03,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:05:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-27 02:05:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 774. [2020-10-27 02:05:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-27 02:05:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1021 transitions. [2020-10-27 02:05:03,961 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1021 transitions. Word has length 42 [2020-10-27 02:05:03,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:03,961 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1021 transitions. [2020-10-27 02:05:03,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:05:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1021 transitions. [2020-10-27 02:05:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 02:05:03,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:03,963 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] [2020-10-27 02:05:03,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 02:05:03,963 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash -940818812, now seen corresponding path program 1 times [2020-10-27 02:05:03,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:03,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863772026] [2020-10-27 02:05:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 02:05:04,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-27 02:05:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:05:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:04,924 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:04,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:04,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:04,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:04,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:05:04,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:04,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:05,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:05,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:05:05,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 02:05:05,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:05:05,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:05:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:05,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:05,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:05:05,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:05,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863772026] [2020-10-27 02:05:05,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:05,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:05:05,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615883967] [2020-10-27 02:05:05,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:05:05,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:05,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:05:05,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:05,220 INFO L87 Difference]: Start difference. First operand 774 states and 1021 transitions. Second operand 10 states. [2020-10-27 02:05:05,463 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:05,772 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:07,501 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 02:05:08,387 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:05:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:09,001 INFO L93 Difference]: Finished difference Result 818 states and 1072 transitions. [2020-10-27 02:05:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:05:09,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 02:05:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:09,007 INFO L225 Difference]: With dead ends: 818 [2020-10-27 02:05:09,007 INFO L226 Difference]: Without dead ends: 811 [2020-10-27 02:05:09,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:05:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-27 02:05:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 774. [2020-10-27 02:05:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-27 02:05:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1020 transitions. [2020-10-27 02:05:09,121 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1020 transitions. Word has length 43 [2020-10-27 02:05:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:09,121 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1020 transitions. [2020-10-27 02:05:09,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:05:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1020 transitions. [2020-10-27 02:05:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 02:05:09,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:09,123 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] [2020-10-27 02:05:09,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 02:05:09,123 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:09,124 INFO L82 PathProgramCache]: Analyzing trace with hash -3193599, now seen corresponding path program 1 times [2020-10-27 02:05:09,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939956618] [2020-10-27 02:05:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 02:05:09,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-27 02:05:09,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 02:05:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:10,008 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:10,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:10,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:10,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:05:10,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:05:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:10,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:10,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:10,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:10,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:10,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:05:10,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 02:05:10,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:05:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:10,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:05:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:05:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:10,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939956618] [2020-10-27 02:05:10,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:10,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:05:10,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741102080] [2020-10-27 02:05:10,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:05:10,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:10,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:05:10,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:10,326 INFO L87 Difference]: Start difference. First operand 774 states and 1020 transitions. Second operand 10 states. [2020-10-27 02:05:10,607 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:10,891 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:05:12,727 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 02:05:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:13,926 INFO L93 Difference]: Finished difference Result 811 states and 1064 transitions. [2020-10-27 02:05:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:05:13,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-27 02:05:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:13,932 INFO L225 Difference]: With dead ends: 811 [2020-10-27 02:05:13,932 INFO L226 Difference]: Without dead ends: 804 [2020-10-27 02:05:13,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 02:05:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-27 02:05:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 774. [2020-10-27 02:05:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-27 02:05:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1019 transitions. [2020-10-27 02:05:14,024 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1019 transitions. Word has length 44 [2020-10-27 02:05:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:14,025 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1019 transitions. [2020-10-27 02:05:14,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:05:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1019 transitions. [2020-10-27 02:05:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 02:05:14,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:14,026 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] [2020-10-27 02:05:14,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 02:05:14,027 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1797166693, now seen corresponding path program 1 times [2020-10-27 02:05:14,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:14,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053925837] [2020-10-27 02:05:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:05:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:14,498 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:14,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:14,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:05:14,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:14,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:14,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:14,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:14,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:14,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:14,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:14,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:14,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:05:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 02:05:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 02:05:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:05:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:14,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:14,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:14,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:14,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053925837] [2020-10-27 02:05:14,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:14,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:05:14,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663278414] [2020-10-27 02:05:14,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:05:14,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:14,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:05:14,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:14,824 INFO L87 Difference]: Start difference. First operand 774 states and 1019 transitions. Second operand 10 states. [2020-10-27 02:05:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:16,944 INFO L93 Difference]: Finished difference Result 818 states and 1071 transitions. [2020-10-27 02:05:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 02:05:16,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-27 02:05:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:16,951 INFO L225 Difference]: With dead ends: 818 [2020-10-27 02:05:16,951 INFO L226 Difference]: Without dead ends: 799 [2020-10-27 02:05:16,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:05:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-10-27 02:05:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 772. [2020-10-27 02:05:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-10-27 02:05:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1015 transitions. [2020-10-27 02:05:17,045 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1015 transitions. Word has length 45 [2020-10-27 02:05:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:17,046 INFO L481 AbstractCegarLoop]: Abstraction has 772 states and 1015 transitions. [2020-10-27 02:05:17,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:05:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1015 transitions. [2020-10-27 02:05:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 02:05:17,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:17,048 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] [2020-10-27 02:05:17,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 02:05:17,048 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash -247450986, now seen corresponding path program 1 times [2020-10-27 02:05:17,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:17,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009284313] [2020-10-27 02:05:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 02:05:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:05:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2894 [2020-10-27 02:05:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 02:05:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,251 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:20,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:20,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:20,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:20,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:20,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:20,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:05:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:05:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:05:20,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:05:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:20,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009284313] [2020-10-27 02:05:20,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:20,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:05:20,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331482942] [2020-10-27 02:05:20,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:05:20,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:20,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:05:20,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:20,474 INFO L87 Difference]: Start difference. First operand 772 states and 1015 transitions. Second operand 10 states. [2020-10-27 02:05:20,755 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:21,122 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:05:22,319 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:05:23,317 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 02:05:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:27,641 INFO L93 Difference]: Finished difference Result 1878 states and 2537 transitions. [2020-10-27 02:05:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 02:05:27,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 02:05:27,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:27,651 INFO L225 Difference]: With dead ends: 1878 [2020-10-27 02:05:27,651 INFO L226 Difference]: Without dead ends: 1368 [2020-10-27 02:05:27,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-27 02:05:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-10-27 02:05:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 948. [2020-10-27 02:05:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-10-27 02:05:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1256 transitions. [2020-10-27 02:05:27,822 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1256 transitions. Word has length 50 [2020-10-27 02:05:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:27,822 INFO L481 AbstractCegarLoop]: Abstraction has 948 states and 1256 transitions. [2020-10-27 02:05:27,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:05:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1256 transitions. [2020-10-27 02:05:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 02:05:27,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:27,825 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] [2020-10-27 02:05:27,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 02:05:27,825 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash 930890442, now seen corresponding path program 1 times [2020-10-27 02:05:27,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:27,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309834676] [2020-10-27 02:05:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 02:05:27,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 02:05:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:05:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:05:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,183 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:05:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:28,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:05:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 02:05:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:05:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:28,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309834676] [2020-10-27 02:05:28,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:28,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:05:28,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269815691] [2020-10-27 02:05:28,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:05:28,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:28,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:05:28,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:05:28,407 INFO L87 Difference]: Start difference. First operand 948 states and 1256 transitions. Second operand 8 states. [2020-10-27 02:05:28,696 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:29,452 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:32,514 INFO L93 Difference]: Finished difference Result 1058 states and 1367 transitions. [2020-10-27 02:05:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 02:05:32,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-27 02:05:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:32,519 INFO L225 Difference]: With dead ends: 1058 [2020-10-27 02:05:32,520 INFO L226 Difference]: Without dead ends: 654 [2020-10-27 02:05:32,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:05:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-27 02:05:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 601. [2020-10-27 02:05:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-10-27 02:05:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 767 transitions. [2020-10-27 02:05:32,600 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 767 transitions. Word has length 51 [2020-10-27 02:05:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:32,600 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 767 transitions. [2020-10-27 02:05:32,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:05:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 767 transitions. [2020-10-27 02:05:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:05:32,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:32,602 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] [2020-10-27 02:05:32,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 02:05:32,603 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:32,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2021638588, now seen corresponding path program 1 times [2020-10-27 02:05:32,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:32,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868788574] [2020-10-27 02:05:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:32,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 02:05:32,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:32,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 02:05:32,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:32,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 02:05:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:05:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,069 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:33,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:05:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:33,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:33,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:05:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:33,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:33,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:33,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 02:05:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:33,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:33,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:33,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:33,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:33,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:33,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:33,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:33,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868788574] [2020-10-27 02:05:33,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:33,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:05:33,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055526312] [2020-10-27 02:05:33,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:05:33,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:05:33,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:05:33,279 INFO L87 Difference]: Start difference. First operand 601 states and 767 transitions. Second operand 8 states. [2020-10-27 02:05:33,536 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:35,350 INFO L93 Difference]: Finished difference Result 924 states and 1184 transitions. [2020-10-27 02:05:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:05:35,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-27 02:05:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:35,355 INFO L225 Difference]: With dead ends: 924 [2020-10-27 02:05:35,355 INFO L226 Difference]: Without dead ends: 642 [2020-10-27 02:05:35,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:05:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-27 02:05:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 615. [2020-10-27 02:05:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-10-27 02:05:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 787 transitions. [2020-10-27 02:05:35,446 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 787 transitions. Word has length 56 [2020-10-27 02:05:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:35,447 INFO L481 AbstractCegarLoop]: Abstraction has 615 states and 787 transitions. [2020-10-27 02:05:35,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:05:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 787 transitions. [2020-10-27 02:05:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 02:05:35,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:35,449 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] [2020-10-27 02:05:35,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 02:05:35,449 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:35,450 INFO L82 PathProgramCache]: Analyzing trace with hash 186423202, now seen corresponding path program 1 times [2020-10-27 02:05:35,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:35,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533156560] [2020-10-27 02:05:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:37,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:37,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 02:05:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:37,505 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:37,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:37,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:37,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:37,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:05:37,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:37,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:37,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:37,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:37,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:37,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:37,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:37,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:37,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:37,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:37,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:37,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:37,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:37,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:37,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:37,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 02:05:37,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 02:05:37,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 02:05:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 02:05:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:05:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:37,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:37,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:05:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:05:37,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:05:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:05:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:37,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533156560] [2020-10-27 02:05:37,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:37,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:05:37,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769775385] [2020-10-27 02:05:37,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:05:37,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:05:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:05:37,862 INFO L87 Difference]: Start difference. First operand 615 states and 787 transitions. Second operand 12 states. [2020-10-27 02:05:38,399 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-27 02:05:38,716 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:39,253 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:05:39,692 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:05:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:43,239 INFO L93 Difference]: Finished difference Result 796 states and 1017 transitions. [2020-10-27 02:05:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 02:05:43,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 02:05:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:43,247 INFO L225 Difference]: With dead ends: 796 [2020-10-27 02:05:43,247 INFO L226 Difference]: Without dead ends: 733 [2020-10-27 02:05:43,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-27 02:05:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-10-27 02:05:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 590. [2020-10-27 02:05:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-10-27 02:05:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 752 transitions. [2020-10-27 02:05:43,335 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 752 transitions. Word has length 54 [2020-10-27 02:05:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:43,335 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 752 transitions. [2020-10-27 02:05:43,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:05:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 752 transitions. [2020-10-27 02:05:43,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 02:05:43,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:43,338 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] [2020-10-27 02:05:43,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 02:05:43,339 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:43,339 INFO L82 PathProgramCache]: Analyzing trace with hash -532058421, now seen corresponding path program 1 times [2020-10-27 02:05:43,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:43,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412558839] [2020-10-27 02:05:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:43,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:43,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:43,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:43,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:05:43,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-27 02:05:43,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:05:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:44,153 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:05:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:44,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:44,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:05:44,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:44,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:44,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:44,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:44,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:05:44,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 02:05:44,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 02:05:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 02:05:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:05:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:44,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:44,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:05:44,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 02:05:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:05:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:05:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:44,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412558839] [2020-10-27 02:05:44,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:44,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:05:44,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598297348] [2020-10-27 02:05:44,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:05:44,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:44,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:05:44,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:05:44,624 INFO L87 Difference]: Start difference. First operand 590 states and 752 transitions. Second operand 13 states. [2020-10-27 02:05:45,252 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-27 02:05:45,578 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:05:46,357 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:05:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:49,837 INFO L93 Difference]: Finished difference Result 700 states and 889 transitions. [2020-10-27 02:05:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:05:49,838 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-27 02:05:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:49,842 INFO L225 Difference]: With dead ends: 700 [2020-10-27 02:05:49,843 INFO L226 Difference]: Without dead ends: 620 [2020-10-27 02:05:49,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-27 02:05:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-27 02:05:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 577. [2020-10-27 02:05:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-27 02:05:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 734 transitions. [2020-10-27 02:05:49,937 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 734 transitions. Word has length 55 [2020-10-27 02:05:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:49,938 INFO L481 AbstractCegarLoop]: Abstraction has 577 states and 734 transitions. [2020-10-27 02:05:49,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:05:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 734 transitions. [2020-10-27 02:05:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 02:05:49,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:49,940 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] [2020-10-27 02:05:49,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 02:05:49,940 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1915456971, now seen corresponding path program 1 times [2020-10-27 02:05:49,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:49,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667722287] [2020-10-27 02:05:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:05:50,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 02:05:50,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:05:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:05:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:50,388 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:50,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:05:50,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:05:50,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:50,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:05:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:50,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:50,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:50,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:05:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:05:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 02:05:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 02:05:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:05:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:05:50,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:05:50,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:05:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:50,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667722287] [2020-10-27 02:05:50,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:50,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:05:50,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021719618] [2020-10-27 02:05:50,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:05:50,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:50,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:05:50,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:05:50,754 INFO L87 Difference]: Start difference. First operand 577 states and 734 transitions. Second operand 8 states. [2020-10-27 02:05:51,004 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:52,758 INFO L93 Difference]: Finished difference Result 694 states and 881 transitions. [2020-10-27 02:05:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 02:05:52,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-27 02:05:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:52,762 INFO L225 Difference]: With dead ends: 694 [2020-10-27 02:05:52,762 INFO L226 Difference]: Without dead ends: 680 [2020-10-27 02:05:52,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:05:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-27 02:05:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 593. [2020-10-27 02:05:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-27 02:05:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 756 transitions. [2020-10-27 02:05:52,847 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 756 transitions. Word has length 55 [2020-10-27 02:05:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:52,847 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 756 transitions. [2020-10-27 02:05:52,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:05:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 756 transitions. [2020-10-27 02:05:52,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:05:52,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:52,849 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] [2020-10-27 02:05:52,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 02:05:52,850 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:52,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1883232962, now seen corresponding path program 1 times [2020-10-27 02:05:52,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:52,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288047768] [2020-10-27 02:05:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 02:05:53,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 02:05:53,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 02:05:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,365 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:53,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:53,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:05:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 02:05:53,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 02:05:53,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 02:05:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:53,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:05:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:05:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:53,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:53,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:53,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:53,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288047768] [2020-10-27 02:05:53,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:53,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:05:53,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087919856] [2020-10-27 02:05:53,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:05:53,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:53,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:05:53,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:53,825 INFO L87 Difference]: Start difference. First operand 593 states and 756 transitions. Second operand 10 states. [2020-10-27 02:05:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:57,272 INFO L93 Difference]: Finished difference Result 904 states and 1157 transitions. [2020-10-27 02:05:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 02:05:57,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-27 02:05:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:57,279 INFO L225 Difference]: With dead ends: 904 [2020-10-27 02:05:57,280 INFO L226 Difference]: Without dead ends: 560 [2020-10-27 02:05:57,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-27 02:05:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 528. [2020-10-27 02:05:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-27 02:05:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 664 transitions. [2020-10-27 02:05:57,377 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 664 transitions. Word has length 62 [2020-10-27 02:05:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:57,378 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 664 transitions. [2020-10-27 02:05:57,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:05:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 664 transitions. [2020-10-27 02:05:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:05:57,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:57,379 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] [2020-10-27 02:05:57,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 02:05:57,380 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash 372682087, now seen corresponding path program 1 times [2020-10-27 02:05:57,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:57,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109568062] [2020-10-27 02:05:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:57,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:58,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:58,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 02:05:58,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-27 02:05:58,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 02:05:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:58,566 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:58,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:58,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:58,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:05:58,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:58,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:58,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:58,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:58,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:58,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:58,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:58,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:58,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:58,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:58,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:05:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 02:05:58,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 02:05:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:05:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:05:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:58,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109568062] [2020-10-27 02:05:58,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:58,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:05:58,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919747295] [2020-10-27 02:05:58,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:05:58,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:58,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:05:58,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:05:58,841 INFO L87 Difference]: Start difference. First operand 528 states and 664 transitions. Second operand 9 states. [2020-10-27 02:05:59,122 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:06:00,776 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:06:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:01,338 INFO L93 Difference]: Finished difference Result 563 states and 704 transitions. [2020-10-27 02:06:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 02:06:01,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 02:06:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:01,343 INFO L225 Difference]: With dead ends: 563 [2020-10-27 02:06:01,343 INFO L226 Difference]: Without dead ends: 558 [2020-10-27 02:06:01,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-27 02:06:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 528. [2020-10-27 02:06:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-27 02:06:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 663 transitions. [2020-10-27 02:06:01,422 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 663 transitions. Word has length 56 [2020-10-27 02:06:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:01,422 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 663 transitions. [2020-10-27 02:06:01,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:06:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 663 transitions. [2020-10-27 02:06:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:06:01,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:01,424 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] [2020-10-27 02:06:01,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 02:06:01,425 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash 381263817, now seen corresponding path program 1 times [2020-10-27 02:06:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:01,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301502911] [2020-10-27 02:06:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:01,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:06:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:06:01,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:01,985 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:01,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:01,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:01,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:01,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:01,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:06:01,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:02,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:02,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:02,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:02,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:02,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:06:02,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 02:06:02,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:06:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 02:06:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:06:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:02,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:06:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:06:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:06:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:02,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301502911] [2020-10-27 02:06:02,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:02,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:06:02,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280044468] [2020-10-27 02:06:02,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:06:02,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:06:02,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:06:02,358 INFO L87 Difference]: Start difference. First operand 528 states and 663 transitions. Second operand 13 states. [2020-10-27 02:06:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:05,696 INFO L93 Difference]: Finished difference Result 570 states and 711 transitions. [2020-10-27 02:06:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:06:05,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-27 02:06:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:05,700 INFO L225 Difference]: With dead ends: 570 [2020-10-27 02:06:05,700 INFO L226 Difference]: Without dead ends: 551 [2020-10-27 02:06:05,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-27 02:06:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 524. [2020-10-27 02:06:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-27 02:06:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 657 transitions. [2020-10-27 02:06:05,788 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 657 transitions. Word has length 56 [2020-10-27 02:06:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:05,789 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 657 transitions. [2020-10-27 02:06:05,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:06:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 657 transitions. [2020-10-27 02:06:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 02:06:05,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:05,790 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] [2020-10-27 02:06:05,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 02:06:05,791 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:05,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:05,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1248728545, now seen corresponding path program 1 times [2020-10-27 02:06:05,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:05,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729691326] [2020-10-27 02:06:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 02:06:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 02:06:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:06:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 02:06:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 02:06:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,263 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:06,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:06,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:06,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:06,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 02:06:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 02:06:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 02:06:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:06:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:06,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:06:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:06,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 02:06:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:06,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:06,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:06:06,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:06,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:06,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:06,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:06:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:06,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729691326] [2020-10-27 02:06:06,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:06,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:06:06,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423047545] [2020-10-27 02:06:06,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:06:06,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:06,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:06:06,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:06:06,604 INFO L87 Difference]: Start difference. First operand 524 states and 657 transitions. Second operand 12 states. [2020-10-27 02:06:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:09,245 INFO L93 Difference]: Finished difference Result 571 states and 711 transitions. [2020-10-27 02:06:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:06:09,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-27 02:06:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:09,249 INFO L225 Difference]: With dead ends: 571 [2020-10-27 02:06:09,250 INFO L226 Difference]: Without dead ends: 531 [2020-10-27 02:06:09,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:06:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-27 02:06:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 504. [2020-10-27 02:06:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-27 02:06:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 632 transitions. [2020-10-27 02:06:09,348 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 632 transitions. Word has length 58 [2020-10-27 02:06:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:09,348 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 632 transitions. [2020-10-27 02:06:09,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:06:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 632 transitions. [2020-10-27 02:06:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 02:06:09,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:09,350 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] [2020-10-27 02:06:09,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 02:06:09,350 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1432703497, now seen corresponding path program 1 times [2020-10-27 02:06:09,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:09,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222682908] [2020-10-27 02:06:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:09,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:09,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 02:06:09,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:09,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 02:06:09,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:06:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:06:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 02:06:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:09,756 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:09,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:09,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:09,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:06:09,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:09,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:06:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:06:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:09,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:09,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:09,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:09,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:06:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:06:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:06:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:09,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:09,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 02:06:09,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 02:06:09,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:06:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 02:06:09,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:06:09,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:06:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:10,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:10,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:06:10,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:10,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:10,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:10,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:10,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:06:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:10,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222682908] [2020-10-27 02:06:10,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:10,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:06:10,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50580077] [2020-10-27 02:06:10,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:06:10,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:10,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:06:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:06:10,104 INFO L87 Difference]: Start difference. First operand 504 states and 632 transitions. Second operand 13 states. [2020-10-27 02:06:10,409 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:06:10,696 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:06:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:14,009 INFO L93 Difference]: Finished difference Result 788 states and 985 transitions. [2020-10-27 02:06:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:06:14,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 02:06:14,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:14,014 INFO L225 Difference]: With dead ends: 788 [2020-10-27 02:06:14,015 INFO L226 Difference]: Without dead ends: 509 [2020-10-27 02:06:14,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-27 02:06:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-27 02:06:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 476. [2020-10-27 02:06:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 02:06:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 587 transitions. [2020-10-27 02:06:14,097 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 587 transitions. Word has length 66 [2020-10-27 02:06:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:14,097 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 587 transitions. [2020-10-27 02:06:14,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:06:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 587 transitions. [2020-10-27 02:06:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 02:06:14,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:14,099 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, 1] [2020-10-27 02:06:14,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 02:06:14,099 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash 146450876, now seen corresponding path program 1 times [2020-10-27 02:06:14,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:14,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511193725] [2020-10-27 02:06:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 02:06:14,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 02:06:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 02:06:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 02:06:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,728 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:14,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:06:14,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:06:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:06:14,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 02:06:14,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 02:06:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 02:06:14,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:06:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:06:14,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:14,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:14,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:14,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:14,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511193725] [2020-10-27 02:06:14,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:14,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:06:14,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110677919] [2020-10-27 02:06:14,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:06:14,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:14,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:06:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:06:14,971 INFO L87 Difference]: Start difference. First operand 476 states and 587 transitions. Second operand 9 states. [2020-10-27 02:06:15,922 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:06:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:17,908 INFO L93 Difference]: Finished difference Result 784 states and 981 transitions. [2020-10-27 02:06:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 02:06:17,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 02:06:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:17,915 INFO L225 Difference]: With dead ends: 784 [2020-10-27 02:06:17,916 INFO L226 Difference]: Without dead ends: 527 [2020-10-27 02:06:17,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:06:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-27 02:06:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 479. [2020-10-27 02:06:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-27 02:06:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 590 transitions. [2020-10-27 02:06:17,997 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 590 transitions. Word has length 68 [2020-10-27 02:06:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:17,998 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 590 transitions. [2020-10-27 02:06:17,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:06:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 590 transitions. [2020-10-27 02:06:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 02:06:17,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:18,000 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] [2020-10-27 02:06:18,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 02:06:18,000 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:18,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1357862824, now seen corresponding path program 1 times [2020-10-27 02:06:18,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:18,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897854308] [2020-10-27 02:06:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:18,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:18,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:06:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:18,539 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:18,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:18,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:18,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:06:18,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:18,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:18,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:18,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:18,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:06:18,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 02:06:18,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:06:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:06:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:06:18,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 02:06:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:06:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:18,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897854308] [2020-10-27 02:06:18,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:18,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:06:18,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443206785] [2020-10-27 02:06:18,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:06:18,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:18,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:06:18,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:18,990 INFO L87 Difference]: Start difference. First operand 479 states and 590 transitions. Second operand 14 states. [2020-10-27 02:06:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:22,808 INFO L93 Difference]: Finished difference Result 524 states and 642 transitions. [2020-10-27 02:06:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:06:22,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-27 02:06:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:22,812 INFO L225 Difference]: With dead ends: 524 [2020-10-27 02:06:22,812 INFO L226 Difference]: Without dead ends: 502 [2020-10-27 02:06:22,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:06:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-27 02:06:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 475. [2020-10-27 02:06:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-27 02:06:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 584 transitions. [2020-10-27 02:06:22,887 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 584 transitions. Word has length 61 [2020-10-27 02:06:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:22,887 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 584 transitions. [2020-10-27 02:06:22,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:06:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 584 transitions. [2020-10-27 02:06:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 02:06:22,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:22,889 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, 1, 1] [2020-10-27 02:06:22,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 02:06:22,889 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash 40230550, now seen corresponding path program 1 times [2020-10-27 02:06:22,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:22,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063277100] [2020-10-27 02:06:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 02:06:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 02:06:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:06:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 02:06:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:06:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,498 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:06:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:23,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:23,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:06:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:06:23,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 02:06:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:06:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:06:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:23,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:23,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:23,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063277100] [2020-10-27 02:06:23,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:23,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:06:23,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925706356] [2020-10-27 02:06:23,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:06:23,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:06:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:06:23,885 INFO L87 Difference]: Start difference. First operand 475 states and 584 transitions. Second operand 12 states. [2020-10-27 02:06:24,908 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:06:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:26,320 INFO L93 Difference]: Finished difference Result 754 states and 934 transitions. [2020-10-27 02:06:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:06:26,322 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-27 02:06:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:26,325 INFO L225 Difference]: With dead ends: 754 [2020-10-27 02:06:26,325 INFO L226 Difference]: Without dead ends: 527 [2020-10-27 02:06:26,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:06:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-27 02:06:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 475. [2020-10-27 02:06:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-27 02:06:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 582 transitions. [2020-10-27 02:06:26,401 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 582 transitions. Word has length 69 [2020-10-27 02:06:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:26,402 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 582 transitions. [2020-10-27 02:06:26,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:06:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 582 transitions. [2020-10-27 02:06:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:06:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:26,403 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] [2020-10-27 02:06:26,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 02:06:26,404 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash -333589905, now seen corresponding path program 1 times [2020-10-27 02:06:26,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:26,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417958040] [2020-10-27 02:06:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:26,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:26,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:06:26,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 02:06:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:06:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 02:06:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:06:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:26,903 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:26,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:26,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:26,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:26,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:26,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:27,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:27,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:27,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:06:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:27,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:06:27,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:06:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:06:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:27,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417958040] [2020-10-27 02:06:27,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:27,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:06:27,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018361355] [2020-10-27 02:06:27,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:06:27,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:27,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:06:27,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:27,318 INFO L87 Difference]: Start difference. First operand 475 states and 582 transitions. Second operand 14 states. [2020-10-27 02:06:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:31,126 INFO L93 Difference]: Finished difference Result 520 states and 634 transitions. [2020-10-27 02:06:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:06:31,127 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 02:06:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:31,130 INFO L225 Difference]: With dead ends: 520 [2020-10-27 02:06:31,130 INFO L226 Difference]: Without dead ends: 497 [2020-10-27 02:06:31,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:06:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-27 02:06:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 470. [2020-10-27 02:06:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-27 02:06:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 575 transitions. [2020-10-27 02:06:31,198 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 575 transitions. Word has length 62 [2020-10-27 02:06:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:31,198 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 575 transitions. [2020-10-27 02:06:31,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:06:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 575 transitions. [2020-10-27 02:06:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:06:31,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:31,200 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] [2020-10-27 02:06:31,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 02:06:31,200 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:31,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash 897725597, now seen corresponding path program 1 times [2020-10-27 02:06:31,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:31,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523526819] [2020-10-27 02:06:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:31,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:31,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:31,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:06:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-27 02:06:31,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:06:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 02:06:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:06:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:31,711 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:31,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:31,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:31,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:31,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:31,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:06:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:31,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:31,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:31,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:31,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:31,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:31,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:31,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:31,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:31,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:06:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 02:06:31,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:06:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:06:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:32,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:06:32,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:06:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:06:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:32,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523526819] [2020-10-27 02:06:32,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:32,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:06:32,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193560892] [2020-10-27 02:06:32,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:06:32,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:06:32,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:32,130 INFO L87 Difference]: Start difference. First operand 470 states and 575 transitions. Second operand 14 states. [2020-10-27 02:06:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:35,741 INFO L93 Difference]: Finished difference Result 515 states and 627 transitions. [2020-10-27 02:06:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:06:35,742 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 02:06:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:35,745 INFO L225 Difference]: With dead ends: 515 [2020-10-27 02:06:35,745 INFO L226 Difference]: Without dead ends: 493 [2020-10-27 02:06:35,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:06:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-27 02:06:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 466. [2020-10-27 02:06:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-27 02:06:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 569 transitions. [2020-10-27 02:06:35,830 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 569 transitions. Word has length 62 [2020-10-27 02:06:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:35,832 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 569 transitions. [2020-10-27 02:06:35,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:06:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 569 transitions. [2020-10-27 02:06:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 02:06:35,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:35,833 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, 1] [2020-10-27 02:06:35,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 02:06:35,833 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:35,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:35,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1714902622, now seen corresponding path program 1 times [2020-10-27 02:06:35,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:35,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098555865] [2020-10-27 02:06:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 02:06:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,334 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:06:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:36,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:36,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:36,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:06:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:06:36,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 02:06:36,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:06:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:06:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:06:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:06:36,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:36,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:06:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:36,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098555865] [2020-10-27 02:06:36,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:36,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:06:36,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976594588] [2020-10-27 02:06:36,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:06:36,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:06:36,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:06:36,611 INFO L87 Difference]: Start difference. First operand 466 states and 569 transitions. Second operand 9 states. [2020-10-27 02:06:37,631 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:06:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:39,110 INFO L93 Difference]: Finished difference Result 892 states and 1098 transitions. [2020-10-27 02:06:39,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:06:39,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 02:06:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:39,115 INFO L225 Difference]: With dead ends: 892 [2020-10-27 02:06:39,116 INFO L226 Difference]: Without dead ends: 638 [2020-10-27 02:06:39,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:06:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-27 02:06:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 587. [2020-10-27 02:06:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-27 02:06:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 717 transitions. [2020-10-27 02:06:39,193 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 717 transitions. Word has length 68 [2020-10-27 02:06:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:39,194 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 717 transitions. [2020-10-27 02:06:39,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:06:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 717 transitions. [2020-10-27 02:06:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 02:06:39,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:39,195 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] [2020-10-27 02:06:39,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 02:06:39,196 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:39,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1963672434, now seen corresponding path program 1 times [2020-10-27 02:06:39,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:39,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669448990] [2020-10-27 02:06:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:39,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 02:06:39,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 02:06:39,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:06:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 02:06:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 02:06:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:39,703 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:39,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:39,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:06:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:39,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:39,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 02:06:39,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:39,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 02:06:39,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:06:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 02:06:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 02:06:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:40,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:06:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:06:40,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:40,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:06:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:40,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669448990] [2020-10-27 02:06:40,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:40,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:06:40,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467471556] [2020-10-27 02:06:40,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:06:40,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:40,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:06:40,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:40,167 INFO L87 Difference]: Start difference. First operand 587 states and 717 transitions. Second operand 14 states. [2020-10-27 02:06:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:43,897 INFO L93 Difference]: Finished difference Result 632 states and 770 transitions. [2020-10-27 02:06:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:06:43,898 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-27 02:06:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:43,900 INFO L225 Difference]: With dead ends: 632 [2020-10-27 02:06:43,900 INFO L226 Difference]: Without dead ends: 588 [2020-10-27 02:06:43,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:06:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-27 02:06:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 561. [2020-10-27 02:06:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-27 02:06:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 685 transitions. [2020-10-27 02:06:43,981 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 685 transitions. Word has length 66 [2020-10-27 02:06:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:43,982 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 685 transitions. [2020-10-27 02:06:43,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:06:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 685 transitions. [2020-10-27 02:06:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 02:06:43,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:43,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:06:43,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 02:06:43,983 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:43,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1658563439, now seen corresponding path program 1 times [2020-10-27 02:06:43,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:43,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636233037] [2020-10-27 02:06:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 02:06:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 02:06:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 02:06:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:06:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,640 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:44,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:06:44,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:44,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:44,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:06:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:06:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:06:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 02:06:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:06:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:06:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:44,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:44,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:44,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 02:06:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:44,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:44,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:06:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:44,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636233037] [2020-10-27 02:06:44,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:44,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 02:06:44,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068932298] [2020-10-27 02:06:44,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 02:06:44,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:44,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 02:06:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:06:44,960 INFO L87 Difference]: Start difference. First operand 561 states and 685 transitions. Second operand 11 states. [2020-10-27 02:06:45,253 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:06:45,962 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:06:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:48,049 INFO L93 Difference]: Finished difference Result 895 states and 1096 transitions. [2020-10-27 02:06:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 02:06:48,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-27 02:06:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:48,053 INFO L225 Difference]: With dead ends: 895 [2020-10-27 02:06:48,053 INFO L226 Difference]: Without dead ends: 577 [2020-10-27 02:06:48,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:06:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-27 02:06:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 543. [2020-10-27 02:06:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-27 02:06:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 655 transitions. [2020-10-27 02:06:48,142 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 655 transitions. Word has length 80 [2020-10-27 02:06:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:48,142 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 655 transitions. [2020-10-27 02:06:48,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 02:06:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 655 transitions. [2020-10-27 02:06:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 02:06:48,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:48,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:06:48,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 02:06:48,144 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:48,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2033776971, now seen corresponding path program 1 times [2020-10-27 02:06:48,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:48,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669271013] [2020-10-27 02:06:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 02:06:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-27 02:06:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:06:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 02:06:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:06:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:48,805 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:48,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:48,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:48,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:48,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:48,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:06:48,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:48,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:48,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:48,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:06:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:49,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:49,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:06:49,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 02:06:49,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:06:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:06:49,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:06:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:49,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:49,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:06:49,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:49,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:49,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:49,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:49,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:49,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:49,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:06:49,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:06:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:49,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:06:49,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 02:06:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:49,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:49,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:06:49,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:06:49,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:06:49,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:06:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:49,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:49,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:06:49,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:49,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669271013] [2020-10-27 02:06:49,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:49,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:06:49,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588729558] [2020-10-27 02:06:49,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:06:49,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:06:49,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:06:49,237 INFO L87 Difference]: Start difference. First operand 543 states and 655 transitions. Second operand 14 states. [2020-10-27 02:06:51,079 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:06:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:52,400 INFO L93 Difference]: Finished difference Result 907 states and 1130 transitions. [2020-10-27 02:06:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 02:06:52,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-27 02:06:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:52,404 INFO L225 Difference]: With dead ends: 907 [2020-10-27 02:06:52,404 INFO L226 Difference]: Without dead ends: 652 [2020-10-27 02:06:52,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-27 02:06:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-10-27 02:06:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 507. [2020-10-27 02:06:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-27 02:06:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 609 transitions. [2020-10-27 02:06:52,472 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 609 transitions. Word has length 81 [2020-10-27 02:06:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:52,473 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 609 transitions. [2020-10-27 02:06:52,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:06:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 609 transitions. [2020-10-27 02:06:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 02:06:52,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:52,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:06:52,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 02:06:52,475 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:52,475 INFO L82 PathProgramCache]: Analyzing trace with hash -631288743, now seen corresponding path program 1 times [2020-10-27 02:06:52,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:52,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604340055] [2020-10-27 02:06:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:55,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:55,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 02:06:55,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:06:55,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3168 [2020-10-27 02:06:55,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:06:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:06:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 02:06:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:55,910 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:06:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:06:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:55,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:55,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:06:55,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:55,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:06:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:56,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:56,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:56,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:06:56,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:56,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:06:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:06:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:06:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:06:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:06:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:06:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:06:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 02:06:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:06:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 02:06:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:06:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:06:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 02:06:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:56,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:06:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:56,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:06:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 02:06:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 02:06:56,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:06:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:06:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:06:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:06:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:06:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:56,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:06:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:06:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:06:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:06:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:06:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:06:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:06:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:06:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:06:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:06:56,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604340055] [2020-10-27 02:06:56,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:06:56,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:06:56,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104876208] [2020-10-27 02:06:56,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:06:56,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:06:56,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:06:56,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:06:56,502 INFO L87 Difference]: Start difference. First operand 507 states and 609 transitions. Second operand 13 states. [2020-10-27 02:06:56,773 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:06:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:06:59,704 INFO L93 Difference]: Finished difference Result 997 states and 1180 transitions. [2020-10-27 02:06:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:06:59,705 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2020-10-27 02:06:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:06:59,708 INFO L225 Difference]: With dead ends: 997 [2020-10-27 02:06:59,708 INFO L226 Difference]: Without dead ends: 660 [2020-10-27 02:06:59,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-27 02:06:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-27 02:06:59,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 628. [2020-10-27 02:06:59,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-27 02:06:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 742 transitions. [2020-10-27 02:06:59,800 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 742 transitions. Word has length 78 [2020-10-27 02:06:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:06:59,801 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 742 transitions. [2020-10-27 02:06:59,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:06:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 742 transitions. [2020-10-27 02:06:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 02:06:59,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:06:59,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:06:59,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 02:06:59,802 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:06:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:06:59,803 INFO L82 PathProgramCache]: Analyzing trace with hash 639620937, now seen corresponding path program 1 times [2020-10-27 02:06:59,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:06:59,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011503167] [2020-10-27 02:06:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:06:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:06:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:06:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:00,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:00,630 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 02:07:00,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 02:07:00,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:07:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 02:07:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:07:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:07:00,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:07:00,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:07:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:00,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 02:07:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:00,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:07:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:07:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 02:07:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 02:07:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:01,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:07:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:01,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:07:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:01,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011503167] [2020-10-27 02:07:01,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:01,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:07:01,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746421069] [2020-10-27 02:07:01,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:07:01,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:01,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:07:01,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:07:01,054 INFO L87 Difference]: Start difference. First operand 628 states and 742 transitions. Second operand 12 states. [2020-10-27 02:07:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:04,117 INFO L93 Difference]: Finished difference Result 685 states and 803 transitions. [2020-10-27 02:07:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:07:04,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-27 02:07:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:04,120 INFO L225 Difference]: With dead ends: 685 [2020-10-27 02:07:04,120 INFO L226 Difference]: Without dead ends: 631 [2020-10-27 02:07:04,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:07:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-27 02:07:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-10-27 02:07:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-27 02:07:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 741 transitions. [2020-10-27 02:07:04,191 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 741 transitions. Word has length 79 [2020-10-27 02:07:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:04,191 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 741 transitions. [2020-10-27 02:07:04,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:07:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 741 transitions. [2020-10-27 02:07:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 02:07:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:04,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:04,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 02:07:04,192 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1575558725, now seen corresponding path program 1 times [2020-10-27 02:07:04,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:04,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31591692] [2020-10-27 02:07:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:04,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:04,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 02:07:04,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-27 02:07:04,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:07:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 02:07:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:07:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,052 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:05,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:07:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:07:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 02:07:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 02:07:05,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:07:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 02:07:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:07:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:07:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:05,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:05,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:05,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 02:07:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:05,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:05,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:07:05,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:05,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:07:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:05,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31591692] [2020-10-27 02:07:05,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:05,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 02:07:05,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213636673] [2020-10-27 02:07:05,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 02:07:05,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:05,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 02:07:05,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:07:05,582 INFO L87 Difference]: Start difference. First operand 628 states and 741 transitions. Second operand 16 states. [2020-10-27 02:07:07,462 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:07:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:09,118 INFO L93 Difference]: Finished difference Result 687 states and 804 transitions. [2020-10-27 02:07:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 02:07:09,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2020-10-27 02:07:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:09,122 INFO L225 Difference]: With dead ends: 687 [2020-10-27 02:07:09,122 INFO L226 Difference]: Without dead ends: 665 [2020-10-27 02:07:09,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-27 02:07:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2020-10-27 02:07:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 636. [2020-10-27 02:07:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-27 02:07:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 750 transitions. [2020-10-27 02:07:09,190 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 750 transitions. Word has length 86 [2020-10-27 02:07:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:09,191 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 750 transitions. [2020-10-27 02:07:09,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 02:07:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 750 transitions. [2020-10-27 02:07:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 02:07:09,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:09,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:09,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 02:07:09,193 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:09,193 INFO L82 PathProgramCache]: Analyzing trace with hash 503532629, now seen corresponding path program 1 times [2020-10-27 02:07:09,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:09,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417217022] [2020-10-27 02:07:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:09,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:07:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,069 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:10,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:10,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:07:10,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:10,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 02:07:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:07:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 02:07:10,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:07:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:07:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:07:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:10,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:10,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 02:07:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:10,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:07:10,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:07:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:10,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417217022] [2020-10-27 02:07:10,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:10,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 02:07:10,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482147658] [2020-10-27 02:07:10,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 02:07:10,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 02:07:10,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:07:10,619 INFO L87 Difference]: Start difference. First operand 636 states and 750 transitions. Second operand 16 states. [2020-10-27 02:07:12,759 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:07:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:14,736 INFO L93 Difference]: Finished difference Result 687 states and 803 transitions. [2020-10-27 02:07:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 02:07:14,737 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-10-27 02:07:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:14,740 INFO L225 Difference]: With dead ends: 687 [2020-10-27 02:07:14,740 INFO L226 Difference]: Without dead ends: 665 [2020-10-27 02:07:14,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-27 02:07:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2020-10-27 02:07:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 628. [2020-10-27 02:07:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-27 02:07:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 740 transitions. [2020-10-27 02:07:14,822 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 740 transitions. Word has length 87 [2020-10-27 02:07:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:14,823 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 740 transitions. [2020-10-27 02:07:14,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 02:07:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 740 transitions. [2020-10-27 02:07:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 02:07:14,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:14,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:14,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 02:07:14,825 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2104015872, now seen corresponding path program 1 times [2020-10-27 02:07:14,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:14,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314201741] [2020-10-27 02:07:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 02:07:15,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:07:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-27 02:07:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 02:07:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 02:07:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,576 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:15,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:07:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:15,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:07:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:07:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 02:07:15,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:07:15,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:07:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 02:07:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:07:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:15,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314201741] [2020-10-27 02:07:15,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:15,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:07:15,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367189611] [2020-10-27 02:07:15,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:07:15,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:15,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:07:15,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:07:15,906 INFO L87 Difference]: Start difference. First operand 628 states and 740 transitions. Second operand 10 states. [2020-10-27 02:07:16,742 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:07:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:18,816 INFO L93 Difference]: Finished difference Result 647 states and 759 transitions. [2020-10-27 02:07:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:07:18,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 02:07:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:18,820 INFO L225 Difference]: With dead ends: 647 [2020-10-27 02:07:18,821 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 02:07:18,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:07:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 02:07:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2020-10-27 02:07:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-27 02:07:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 683 transitions. [2020-10-27 02:07:18,887 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 683 transitions. Word has length 82 [2020-10-27 02:07:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:18,887 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 683 transitions. [2020-10-27 02:07:18,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:07:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 683 transitions. [2020-10-27 02:07:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 02:07:18,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:18,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:18,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 02:07:18,889 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash -915627356, now seen corresponding path program 1 times [2020-10-27 02:07:18,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:18,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011073319] [2020-10-27 02:07:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 02:07:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:24,202 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:24,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:24,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 02:07:24,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:07:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:24,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:24,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:24,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:24,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:27,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:07:27,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 02:07:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3347 [2020-10-27 02:07:27,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 02:07:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:07:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 02:07:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:27,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:07:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:07:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:07:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 02:07:27,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:07:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:07:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 02:07:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:07:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:27,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:07:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:28,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 02:07:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:28,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:28,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:07:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:07:28,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:07:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:28,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 02:07:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:07:28,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:28,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011073319] [2020-10-27 02:07:28,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:28,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:07:28,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728990549] [2020-10-27 02:07:28,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:07:28,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:28,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:07:28,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:07:28,096 INFO L87 Difference]: Start difference. First operand 580 states and 683 transitions. Second operand 14 states. [2020-10-27 02:07:28,591 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-27 02:07:29,786 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-27 02:07:30,080 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-27 02:07:32,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:32,688 INFO L93 Difference]: Finished difference Result 698 states and 812 transitions. [2020-10-27 02:07:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 02:07:32,689 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-27 02:07:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:32,692 INFO L225 Difference]: With dead ends: 698 [2020-10-27 02:07:32,692 INFO L226 Difference]: Without dead ends: 615 [2020-10-27 02:07:32,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2020-10-27 02:07:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-27 02:07:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 580. [2020-10-27 02:07:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-27 02:07:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 681 transitions. [2020-10-27 02:07:32,757 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 681 transitions. Word has length 91 [2020-10-27 02:07:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:32,757 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 681 transitions. [2020-10-27 02:07:32,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:07:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 681 transitions. [2020-10-27 02:07:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 02:07:32,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:32,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:32,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 02:07:32,759 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1552577764, now seen corresponding path program 1 times [2020-10-27 02:07:32,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:32,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105027796] [2020-10-27 02:07:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:07:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:07:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,045 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:35,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:07:35,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 02:07:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:07:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:07:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:07:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:07:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:07:35,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:07:35,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:07:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:07:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 02:07:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:07:35,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:35,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 02:07:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 02:07:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:35,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:35,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:35,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105027796] [2020-10-27 02:07:35,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:35,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 02:07:35,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932835661] [2020-10-27 02:07:35,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 02:07:35,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:35,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 02:07:35,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-27 02:07:35,706 INFO L87 Difference]: Start difference. First operand 580 states and 681 transitions. Second operand 15 states. [2020-10-27 02:07:36,637 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 02:07:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:39,878 INFO L93 Difference]: Finished difference Result 663 states and 771 transitions. [2020-10-27 02:07:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:07:39,880 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-27 02:07:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:39,883 INFO L225 Difference]: With dead ends: 663 [2020-10-27 02:07:39,883 INFO L226 Difference]: Without dead ends: 581 [2020-10-27 02:07:39,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-10-27 02:07:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-27 02:07:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2020-10-27 02:07:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-27 02:07:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 679 transitions. [2020-10-27 02:07:39,958 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 679 transitions. Word has length 91 [2020-10-27 02:07:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:39,958 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 679 transitions. [2020-10-27 02:07:39,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 02:07:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 679 transitions. [2020-10-27 02:07:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 02:07:39,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:39,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:39,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 02:07:39,960 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash 271323139, now seen corresponding path program 1 times [2020-10-27 02:07:39,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:39,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045849750] [2020-10-27 02:07:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:42,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:42,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 02:07:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:07:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-27 02:07:42,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:07:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:07:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:07:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:42,932 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:42,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:42,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:42,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:42,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:43,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:43,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:43,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:43,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:07:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:07:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:07:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:07:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:07:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 02:07:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:07:43,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:43,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 02:07:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 02:07:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:43,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:43,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:07:43,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:43,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:07:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:43,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045849750] [2020-10-27 02:07:43,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:43,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 02:07:43,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342595253] [2020-10-27 02:07:43,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 02:07:43,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:43,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 02:07:43,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-27 02:07:43,733 INFO L87 Difference]: Start difference. First operand 579 states and 679 transitions. Second operand 15 states. [2020-10-27 02:07:44,623 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:07:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:47,484 INFO L93 Difference]: Finished difference Result 584 states and 683 transitions. [2020-10-27 02:07:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:07:47,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-27 02:07:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:47,488 INFO L225 Difference]: With dead ends: 584 [2020-10-27 02:07:47,489 INFO L226 Difference]: Without dead ends: 496 [2020-10-27 02:07:47,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-10-27 02:07:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-27 02:07:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 494. [2020-10-27 02:07:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-27 02:07:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 583 transitions. [2020-10-27 02:07:47,569 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 583 transitions. Word has length 91 [2020-10-27 02:07:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:47,570 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 583 transitions. [2020-10-27 02:07:47,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 02:07:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 583 transitions. [2020-10-27 02:07:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 02:07:47,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:47,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:47,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 02:07:47,571 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:47,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2033530458, now seen corresponding path program 1 times [2020-10-27 02:07:47,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:47,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067156273] [2020-10-27 02:07:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 02:07:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-27 02:07:48,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:07:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 02:07:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 02:07:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:48,493 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:48,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:48,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:48,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:48,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:48,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:48,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:48,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 02:07:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:07:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:07:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:49,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:49,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:49,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:49,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:49,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:49,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:49,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 02:07:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:49,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:07:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 02:07:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:07:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:07:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:49,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067156273] [2020-10-27 02:07:49,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:49,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 02:07:49,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740794877] [2020-10-27 02:07:49,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 02:07:49,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:49,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 02:07:49,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-27 02:07:49,241 INFO L87 Difference]: Start difference. First operand 494 states and 583 transitions. Second operand 15 states. [2020-10-27 02:07:49,526 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:07:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:51,254 INFO L93 Difference]: Finished difference Result 520 states and 608 transitions. [2020-10-27 02:07:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 02:07:51,255 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 97 [2020-10-27 02:07:51,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:51,257 INFO L225 Difference]: With dead ends: 520 [2020-10-27 02:07:51,257 INFO L226 Difference]: Without dead ends: 470 [2020-10-27 02:07:51,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2020-10-27 02:07:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-27 02:07:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 417. [2020-10-27 02:07:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 02:07:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 485 transitions. [2020-10-27 02:07:51,321 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 485 transitions. Word has length 97 [2020-10-27 02:07:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:51,321 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 485 transitions. [2020-10-27 02:07:51,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 02:07:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 485 transitions. [2020-10-27 02:07:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 02:07:51,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:51,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:51,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 02:07:51,322 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:51,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1492347407, now seen corresponding path program 1 times [2020-10-27 02:07:51,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:51,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581850234] [2020-10-27 02:07:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:51,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:51,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 02:07:51,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:07:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-27 02:07:51,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 02:07:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 02:07:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:07:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,184 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:07:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 02:07:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 02:07:52,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 02:07:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 02:07:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 02:07:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 02:07:52,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 02:07:52,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:07:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 02:07:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:07:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:07:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:52,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 02:07:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:07:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:07:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:07:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 02:07:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:07:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:07:53,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581850234] [2020-10-27 02:07:53,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:53,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-27 02:07:53,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780188116] [2020-10-27 02:07:53,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 02:07:53,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:53,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 02:07:53,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-27 02:07:53,119 INFO L87 Difference]: Start difference. First operand 417 states and 485 transitions. Second operand 21 states. [2020-10-27 02:07:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:55,191 INFO L93 Difference]: Finished difference Result 567 states and 664 transitions. [2020-10-27 02:07:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 02:07:55,192 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 102 [2020-10-27 02:07:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:55,194 INFO L225 Difference]: With dead ends: 567 [2020-10-27 02:07:55,194 INFO L226 Difference]: Without dead ends: 417 [2020-10-27 02:07:55,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2020-10-27 02:07:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-27 02:07:55,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 351. [2020-10-27 02:07:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-27 02:07:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 408 transitions. [2020-10-27 02:07:55,256 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 408 transitions. Word has length 102 [2020-10-27 02:07:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:55,257 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 408 transitions. [2020-10-27 02:07:55,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 02:07:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 408 transitions. [2020-10-27 02:07:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 02:07:55,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:55,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:55,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 02:07:55,258 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash -883729053, now seen corresponding path program 1 times [2020-10-27 02:07:55,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:55,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586451043] [2020-10-27 02:07:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 02:07:56,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:07:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-27 02:07:56,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:07:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-27 02:07:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:07:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,400 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:07:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:07:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:07:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 02:07:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:07:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:07:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:07:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:56,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 02:07:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:07:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:07:56,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 02:07:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:07:56,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:07:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 02:07:56,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:07:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:07:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:07:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:07:56,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:07:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:07:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:07:56,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:07:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:07:56,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:07:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:07:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 02:07:56,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586451043] [2020-10-27 02:07:56,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:07:56,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:07:56,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238852852] [2020-10-27 02:07:56,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:07:56,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:07:56,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:07:56,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:07:56,868 INFO L87 Difference]: Start difference. First operand 351 states and 408 transitions. Second operand 14 states. [2020-10-27 02:07:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:07:58,061 INFO L93 Difference]: Finished difference Result 380 states and 436 transitions. [2020-10-27 02:07:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:07:58,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-10-27 02:07:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:07:58,063 INFO L225 Difference]: With dead ends: 380 [2020-10-27 02:07:58,063 INFO L226 Difference]: Without dead ends: 303 [2020-10-27 02:07:58,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:07:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-27 02:07:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 241. [2020-10-27 02:07:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-27 02:07:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 268 transitions. [2020-10-27 02:07:58,104 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 268 transitions. Word has length 111 [2020-10-27 02:07:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:07:58,105 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 268 transitions. [2020-10-27 02:07:58,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:07:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 268 transitions. [2020-10-27 02:07:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 02:07:58,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:07:58,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:07:58,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 02:07:58,106 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:07:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:07:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1006262695, now seen corresponding path program 1 times [2020-10-27 02:07:58,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:07:58,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259966180] [2020-10-27 02:07:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:07:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:07:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:07:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking...