/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:16:14,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:16:14,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:16:14,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:16:14,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:16:14,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:16:14,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:16:14,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:16:14,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:16:14,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:16:14,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:16:14,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:16:14,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:16:14,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:16:14,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:16:14,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:16:14,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:16:14,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:16:14,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:16:14,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:16:14,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:16:14,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:16:14,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:16:14,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:16:14,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:16:14,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:16:14,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:16:14,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:16:14,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:16:14,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:16:14,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:16:14,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:16:14,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:16:14,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:16:14,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:16:14,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:16:14,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:16:14,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:16:14,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:16:14,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:16:14,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:16:14,978 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 [2020-10-13 11:16:15,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:16:15,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:16:15,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:16:15,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:16:15,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:16:15,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:16:15,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:16:15,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:16:15,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:16:15,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:16:15,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:16:15,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:16:15,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:16:15,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:16:15,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:16:15,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:16:15,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:16:15,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:16:15,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:16:15,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:16:15,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:16:15,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:16:15,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:16:15,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:16:15,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:16:15,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:16:15,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:16:15,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:16:15,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:16:15,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 11:16:15,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:16:15,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:16:15,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:16:15,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:16:15,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:16:15,346 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-13 11:16:15,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5cf85e06/97056e03a7e844f38735e53a5cf21e6e/FLAG9d9eab2c3 [2020-10-13 11:16:15,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:16:15,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-13 11:16:15,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5cf85e06/97056e03a7e844f38735e53a5cf21e6e/FLAG9d9eab2c3 [2020-10-13 11:16:16,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5cf85e06/97056e03a7e844f38735e53a5cf21e6e [2020-10-13 11:16:16,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:16:16,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:16:16,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:16:16,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:16:16,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:16:16,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:16" (1/1) ... [2020-10-13 11:16:16,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efc8eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:16, skipping insertion in model container [2020-10-13 11:16:16,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:16" (1/1) ... [2020-10-13 11:16:16,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:16:16,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:16:16,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:16:16,877 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:16:16,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:16:17,024 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:16:17,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17 WrapperNode [2020-10-13 11:16:17,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:16:17,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:16:17,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:16:17,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:16:17,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (1/1) ... [2020-10-13 11:16:17,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:16:17,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:16:17,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:16:17,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:16:17,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (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 [2020-10-13 11:16:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:16:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:16:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-13 11:16:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-13 11:16:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-13 11:16:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-13 11:16:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-13 11:16:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-13 11:16:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-13 11:16:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-13 11:16:17,210 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-13 11:16:17,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:16:17,210 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-13 11:16:17,210 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-13 11:16:17,211 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-13 11:16:17,211 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-13 11:16:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-13 11:16:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-13 11:16:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-13 11:16:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-13 11:16:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-13 11:16:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-13 11:16:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-13 11:16:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-13 11:16:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-13 11:16:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2020-10-13 11:16:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2020-10-13 11:16:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2020-10-13 11:16:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2020-10-13 11:16:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-13 11:16:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:16:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 11:16:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 11:16:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 11:16:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-13 11:16:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-13 11:16:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-13 11:16:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-13 11:16:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-13 11:16:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-13 11:16:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-13 11:16:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-13 11:16:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-13 11:16:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-13 11:16:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-13 11:16:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2020-10-13 11:16:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2020-10-13 11:16:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2020-10-13 11:16:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2020-10-13 11:16:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-13 11:16:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-13 11:16:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-13 11:16:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-13 11:16:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-13 11:16:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:16:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-13 11:16:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:16:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:16:17,647 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:17,708 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:17,708 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:17,717 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:17,727 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:17,728 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:17,736 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:17,939 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-13 11:16:17,939 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-13 11:16:17,942 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,023 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-10-13 11:16:18,023 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-10-13 11:16:18,039 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,062 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-13 11:16:18,063 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-13 11:16:18,166 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,194 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:18,195 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:18,195 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,204 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:18,204 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:18,205 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,216 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:18,216 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:18,320 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,354 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-13 11:16:18,354 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-13 11:16:18,358 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,485 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2020-10-13 11:16:18,485 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2020-10-13 11:16:18,535 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,541 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:18,542 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:18,542 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,551 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:18,551 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:18,552 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:18,561 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:16:18,561 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:16:18,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:16:18,586 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 11:16:18,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:18 BoogieIcfgContainer [2020-10-13 11:16:18,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:16:18,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:16:18,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:16:18,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:16:18,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:16:16" (1/3) ... [2020-10-13 11:16:18,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b71e07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:18, skipping insertion in model container [2020-10-13 11:16:18,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:17" (2/3) ... [2020-10-13 11:16:18,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b71e07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:18, skipping insertion in model container [2020-10-13 11:16:18,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:18" (3/3) ... [2020-10-13 11:16:18,602 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2020-10-13 11:16:18,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:16:18,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:16:18,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:16:18,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:16:18,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:16:18,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:16:18,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:16:18,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:16:18,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:16:18,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:16:18,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:16:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2020-10-13 11:16:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:16:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:18,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:18,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1980583479, now seen corresponding path program 1 times [2020-10-13 11:16:18,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:18,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959407949] [2020-10-13 11:16:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:19,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:16:19,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 11:16:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-13 11:16:19,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 11:16:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:16:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 11:16:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:19,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:19,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:19,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:19,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959407949] [2020-10-13 11:16:19,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:19,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:16:19,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93657593] [2020-10-13 11:16:20,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:16:20,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:16:20,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:16:20,019 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 5 states. [2020-10-13 11:16:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:21,991 INFO L93 Difference]: Finished difference Result 771 states and 1123 transitions. [2020-10-13 11:16:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:21,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 11:16:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:22,015 INFO L225 Difference]: With dead ends: 771 [2020-10-13 11:16:22,015 INFO L226 Difference]: Without dead ends: 523 [2020-10-13 11:16:22,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-13 11:16:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 466. [2020-10-13 11:16:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-13 11:16:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 636 transitions. [2020-10-13 11:16:22,203 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 636 transitions. Word has length 20 [2020-10-13 11:16:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:22,204 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 636 transitions. [2020-10-13 11:16:22,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:16:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 636 transitions. [2020-10-13 11:16:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:16:22,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:22,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:22,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:16:22,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1966238570, now seen corresponding path program 1 times [2020-10-13 11:16:22,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:22,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412486275] [2020-10-13 11:16:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:16:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 11:16:22,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:16:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:16:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:22,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:22,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412486275] [2020-10-13 11:16:22,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:22,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:16:22,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94523751] [2020-10-13 11:16:22,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:16:22,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:16:22,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:16:22,593 INFO L87 Difference]: Start difference. First operand 466 states and 636 transitions. Second operand 5 states. [2020-10-13 11:16:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:24,071 INFO L93 Difference]: Finished difference Result 530 states and 724 transitions. [2020-10-13 11:16:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:24,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 11:16:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:24,078 INFO L225 Difference]: With dead ends: 530 [2020-10-13 11:16:24,079 INFO L226 Difference]: Without dead ends: 514 [2020-10-13 11:16:24,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-13 11:16:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 466. [2020-10-13 11:16:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-13 11:16:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 635 transitions. [2020-10-13 11:16:24,153 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 635 transitions. Word has length 20 [2020-10-13 11:16:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:24,153 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 635 transitions. [2020-10-13 11:16:24,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:16:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 635 transitions. [2020-10-13 11:16:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 11:16:24,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:24,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:24,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:16:24,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1877533292, now seen corresponding path program 1 times [2020-10-13 11:16:24,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:24,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34674190] [2020-10-13 11:16:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:24,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 11:16:24,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 11:16:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:16:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:16:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:24,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:24,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:24,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:24,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:24,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:24,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:24,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34674190] [2020-10-13 11:16:24,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:24,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:24,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566471209] [2020-10-13 11:16:24,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:24,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:24,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:24,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:24,644 INFO L87 Difference]: Start difference. First operand 466 states and 635 transitions. Second operand 6 states. [2020-10-13 11:16:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:27,011 INFO L93 Difference]: Finished difference Result 856 states and 1160 transitions. [2020-10-13 11:16:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:27,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-13 11:16:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:27,022 INFO L225 Difference]: With dead ends: 856 [2020-10-13 11:16:27,022 INFO L226 Difference]: Without dead ends: 685 [2020-10-13 11:16:27,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-13 11:16:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 577. [2020-10-13 11:16:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-13 11:16:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 789 transitions. [2020-10-13 11:16:27,101 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 789 transitions. Word has length 25 [2020-10-13 11:16:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:27,101 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 789 transitions. [2020-10-13 11:16:27,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 789 transitions. [2020-10-13 11:16:27,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 11:16:27,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:27,110 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] [2020-10-13 11:16:27,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:16:27,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:27,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:27,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2127650726, now seen corresponding path program 1 times [2020-10-13 11:16:27,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:27,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756668243] [2020-10-13 11:16:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:28,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 11:16:28,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-10-13 11:16:28,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:16:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:16:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:28,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:28,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:28,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:28,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:16:28,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:28,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:28,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:28,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:28,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:28,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:28,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:28,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:28,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:28,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756668243] [2020-10-13 11:16:28,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:28,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:28,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233003041] [2020-10-13 11:16:28,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:28,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:28,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:28,423 INFO L87 Difference]: Start difference. First operand 577 states and 789 transitions. Second operand 6 states. [2020-10-13 11:16:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:29,631 INFO L93 Difference]: Finished difference Result 661 states and 894 transitions. [2020-10-13 11:16:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:29,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-13 11:16:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:29,638 INFO L225 Difference]: With dead ends: 661 [2020-10-13 11:16:29,638 INFO L226 Difference]: Without dead ends: 657 [2020-10-13 11:16:29,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:29,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-10-13 11:16:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 575. [2020-10-13 11:16:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-13 11:16:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 785 transitions. [2020-10-13 11:16:29,690 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 785 transitions. Word has length 31 [2020-10-13 11:16:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:29,691 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 785 transitions. [2020-10-13 11:16:29,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 785 transitions. [2020-10-13 11:16:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 11:16:29,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:29,693 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] [2020-10-13 11:16:29,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:16:29,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash -984761052, now seen corresponding path program 1 times [2020-10-13 11:16:29,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:29,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725937159] [2020-10-13 11:16:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 11:16:31,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-13 11:16:31,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:16:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 11:16:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:31,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:16:31,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:31,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:31,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:31,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725937159] [2020-10-13 11:16:31,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:31,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:31,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124336589] [2020-10-13 11:16:31,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:31,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:31,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:31,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:31,187 INFO L87 Difference]: Start difference. First operand 575 states and 785 transitions. Second operand 6 states. [2020-10-13 11:16:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:32,472 INFO L93 Difference]: Finished difference Result 1109 states and 1499 transitions. [2020-10-13 11:16:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:32,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 11:16:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:32,482 INFO L225 Difference]: With dead ends: 1109 [2020-10-13 11:16:32,482 INFO L226 Difference]: Without dead ends: 811 [2020-10-13 11:16:32,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-13 11:16:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 763. [2020-10-13 11:16:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-13 11:16:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1042 transitions. [2020-10-13 11:16:32,563 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1042 transitions. Word has length 33 [2020-10-13 11:16:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:32,564 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1042 transitions. [2020-10-13 11:16:32,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1042 transitions. [2020-10-13 11:16:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 11:16:32,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:32,568 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] [2020-10-13 11:16:32,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:16:32,568 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1251517402, now seen corresponding path program 1 times [2020-10-13 11:16:32,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:32,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238633491] [2020-10-13 11:16:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 11:16:32,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 11:16:32,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 11:16:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:16:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:32,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:32,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:32,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:32,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:32,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:32,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:32,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:32,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:16:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:32,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:32,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:32,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:16:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:16:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:32,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:16:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:32,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:32,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:32,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:32,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:32,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:32,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238633491] [2020-10-13 11:16:32,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:32,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:32,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604583957] [2020-10-13 11:16:32,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:32,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:32,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:32,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:32,840 INFO L87 Difference]: Start difference. First operand 763 states and 1042 transitions. Second operand 8 states. [2020-10-13 11:16:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:34,253 INFO L93 Difference]: Finished difference Result 872 states and 1177 transitions. [2020-10-13 11:16:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:16:34,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-13 11:16:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:34,261 INFO L225 Difference]: With dead ends: 872 [2020-10-13 11:16:34,261 INFO L226 Difference]: Without dead ends: 867 [2020-10-13 11:16:34,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-10-13 11:16:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 810. [2020-10-13 11:16:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-13 11:16:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1098 transitions. [2020-10-13 11:16:34,349 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1098 transitions. Word has length 38 [2020-10-13 11:16:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:34,350 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1098 transitions. [2020-10-13 11:16:34,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1098 transitions. [2020-10-13 11:16:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 11:16:34,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:34,353 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] [2020-10-13 11:16:34,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:16:34,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1679216250, now seen corresponding path program 1 times [2020-10-13 11:16:34,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:34,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977825918] [2020-10-13 11:16:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 11:16:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 11:16:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 11:16:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:16:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:34,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:34,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:34,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977825918] [2020-10-13 11:16:34,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:34,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:34,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815802315] [2020-10-13 11:16:34,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:34,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:34,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:34,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:34,740 INFO L87 Difference]: Start difference. First operand 810 states and 1098 transitions. Second operand 6 states. [2020-10-13 11:16:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:36,583 INFO L93 Difference]: Finished difference Result 845 states and 1141 transitions. [2020-10-13 11:16:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:36,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-13 11:16:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:36,589 INFO L225 Difference]: With dead ends: 845 [2020-10-13 11:16:36,590 INFO L226 Difference]: Without dead ends: 842 [2020-10-13 11:16:36,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-13 11:16:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 821. [2020-10-13 11:16:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-13 11:16:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1112 transitions. [2020-10-13 11:16:36,679 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1112 transitions. Word has length 38 [2020-10-13 11:16:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:36,681 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1112 transitions. [2020-10-13 11:16:36,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1112 transitions. [2020-10-13 11:16:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 11:16:36,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:36,685 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] [2020-10-13 11:16:36,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:16:36,686 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1380961955, now seen corresponding path program 1 times [2020-10-13 11:16:36,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:36,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555171370] [2020-10-13 11:16:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 11:16:37,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 11:16:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 11:16:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:16:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:16:37,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 11:16:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:37,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 11:16:37,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:16:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:16:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:37,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:37,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:37,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555171370] [2020-10-13 11:16:37,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:37,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:16:37,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778348807] [2020-10-13 11:16:37,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:16:37,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:37,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:16:37,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:37,339 INFO L87 Difference]: Start difference. First operand 821 states and 1112 transitions. Second operand 10 states. [2020-10-13 11:16:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:39,556 INFO L93 Difference]: Finished difference Result 887 states and 1195 transitions. [2020-10-13 11:16:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:16:39,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-13 11:16:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:39,565 INFO L225 Difference]: With dead ends: 887 [2020-10-13 11:16:39,565 INFO L226 Difference]: Without dead ends: 872 [2020-10-13 11:16:39,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-13 11:16:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 819. [2020-10-13 11:16:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-13 11:16:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1108 transitions. [2020-10-13 11:16:39,649 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1108 transitions. Word has length 40 [2020-10-13 11:16:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:39,650 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1108 transitions. [2020-10-13 11:16:39,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:16:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1108 transitions. [2020-10-13 11:16:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 11:16:39,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:39,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:39,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:16:39,654 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash 310268416, now seen corresponding path program 1 times [2020-10-13 11:16:39,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:39,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309420661] [2020-10-13 11:16:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 11:16:40,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-13 11:16:40,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:16:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:16:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:40,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:40,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:40,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:16:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:16:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:16:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:40,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:40,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:40,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309420661] [2020-10-13 11:16:40,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:40,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:16:40,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498289804] [2020-10-13 11:16:40,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:16:40,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:16:40,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:40,359 INFO L87 Difference]: Start difference. First operand 819 states and 1108 transitions. Second operand 10 states. [2020-10-13 11:16:42,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:42,555 INFO L93 Difference]: Finished difference Result 885 states and 1191 transitions. [2020-10-13 11:16:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:16:42,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-13 11:16:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:42,564 INFO L225 Difference]: With dead ends: 885 [2020-10-13 11:16:42,564 INFO L226 Difference]: Without dead ends: 865 [2020-10-13 11:16:42,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2020-10-13 11:16:42,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 812. [2020-10-13 11:16:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-13 11:16:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1099 transitions. [2020-10-13 11:16:42,633 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1099 transitions. Word has length 39 [2020-10-13 11:16:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:42,634 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 1099 transitions. [2020-10-13 11:16:42,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:16:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1099 transitions. [2020-10-13 11:16:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 11:16:42,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:42,635 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] [2020-10-13 11:16:42,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 11:16:42,636 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:42,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1241145468, now seen corresponding path program 1 times [2020-10-13 11:16:42,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:42,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664020863] [2020-10-13 11:16:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 11:16:46,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:16:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3779 [2020-10-13 11:16:46,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 11:16:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:46,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:46,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 11:16:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:46,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:46,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664020863] [2020-10-13 11:16:46,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:46,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:16:46,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952700587] [2020-10-13 11:16:46,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:16:46,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:46,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:16:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:46,653 INFO L87 Difference]: Start difference. First operand 812 states and 1099 transitions. Second operand 7 states. [2020-10-13 11:16:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:49,153 INFO L93 Difference]: Finished difference Result 1185 states and 1609 transitions. [2020-10-13 11:16:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:16:49,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-13 11:16:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:49,165 INFO L225 Difference]: With dead ends: 1185 [2020-10-13 11:16:49,166 INFO L226 Difference]: Without dead ends: 1182 [2020-10-13 11:16:49,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-10-13 11:16:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 925. [2020-10-13 11:16:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-10-13 11:16:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1253 transitions. [2020-10-13 11:16:49,302 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1253 transitions. Word has length 44 [2020-10-13 11:16:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:49,303 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1253 transitions. [2020-10-13 11:16:49,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:16:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1253 transitions. [2020-10-13 11:16:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 11:16:49,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:49,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:49,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 11:16:49,306 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1407580827, now seen corresponding path program 1 times [2020-10-13 11:16:49,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:49,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229320985] [2020-10-13 11:16:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 11:16:50,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:50,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-10-13 11:16:50,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:16:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:16:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:50,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:16:50,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:50,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:50,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:50,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:16:50,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 11:16:50,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:16:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:50,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:50,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:50,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229320985] [2020-10-13 11:16:50,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:50,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:16:50,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920606238] [2020-10-13 11:16:50,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:16:50,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:50,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:16:50,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:50,701 INFO L87 Difference]: Start difference. First operand 925 states and 1253 transitions. Second operand 10 states. [2020-10-13 11:16:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:52,994 INFO L93 Difference]: Finished difference Result 978 states and 1317 transitions. [2020-10-13 11:16:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:16:52,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-13 11:16:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:53,004 INFO L225 Difference]: With dead ends: 978 [2020-10-13 11:16:53,005 INFO L226 Difference]: Without dead ends: 960 [2020-10-13 11:16:53,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-13 11:16:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 923. [2020-10-13 11:16:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-10-13 11:16:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1249 transitions. [2020-10-13 11:16:53,161 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1249 transitions. Word has length 43 [2020-10-13 11:16:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:53,162 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1249 transitions. [2020-10-13 11:16:53,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:16:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1249 transitions. [2020-10-13 11:16:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 11:16:53,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:53,166 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] [2020-10-13 11:16:53,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 11:16:53,167 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:53,167 INFO L82 PathProgramCache]: Analyzing trace with hash -319659871, now seen corresponding path program 1 times [2020-10-13 11:16:53,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:53,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222617698] [2020-10-13 11:16:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 11:16:53,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 11:16:53,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 11:16:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:53,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:53,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:53,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:53,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:53,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:53,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 11:16:53,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 11:16:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:53,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:53,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222617698] [2020-10-13 11:16:53,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:53,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:53,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854474927] [2020-10-13 11:16:53,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:53,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:53,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:53,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:53,784 INFO L87 Difference]: Start difference. First operand 923 states and 1249 transitions. Second operand 8 states. [2020-10-13 11:16:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:55,834 INFO L93 Difference]: Finished difference Result 971 states and 1305 transitions. [2020-10-13 11:16:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:16:55,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-13 11:16:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:55,844 INFO L225 Difference]: With dead ends: 971 [2020-10-13 11:16:55,844 INFO L226 Difference]: Without dead ends: 949 [2020-10-13 11:16:55,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-13 11:16:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 925. [2020-10-13 11:16:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-10-13 11:16:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1251 transitions. [2020-10-13 11:16:55,919 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1251 transitions. Word has length 42 [2020-10-13 11:16:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:55,920 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1251 transitions. [2020-10-13 11:16:55,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1251 transitions. [2020-10-13 11:16:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 11:16:55,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:55,922 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] [2020-10-13 11:16:55,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 11:16:55,922 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:55,923 INFO L82 PathProgramCache]: Analyzing trace with hash -58863371, now seen corresponding path program 1 times [2020-10-13 11:16:55,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:55,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342071925] [2020-10-13 11:16:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 11:17:00,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:00,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 11:17:00,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:00,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 11:17:00,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:00,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:01,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:17:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:01,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:01,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:01,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:01,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:01,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:01,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:01,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:01,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:01,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:01,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 11:17:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:01,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:01,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:01,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:01,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:17:01,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:01,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342071925] [2020-10-13 11:17:01,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:01,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 11:17:01,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890390365] [2020-10-13 11:17:01,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:17:01,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:17:01,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:17:01,213 INFO L87 Difference]: Start difference. First operand 925 states and 1251 transitions. Second operand 9 states. [2020-10-13 11:17:03,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:03,758 INFO L93 Difference]: Finished difference Result 1027 states and 1377 transitions. [2020-10-13 11:17:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:17:03,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-13 11:17:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:03,765 INFO L225 Difference]: With dead ends: 1027 [2020-10-13 11:17:03,765 INFO L226 Difference]: Without dead ends: 957 [2020-10-13 11:17:03,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-13 11:17:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 929. [2020-10-13 11:17:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-13 11:17:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1256 transitions. [2020-10-13 11:17:03,839 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1256 transitions. Word has length 45 [2020-10-13 11:17:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:03,839 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1256 transitions. [2020-10-13 11:17:03,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:17:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1256 transitions. [2020-10-13 11:17:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 11:17:03,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:03,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:03,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 11:17:03,842 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash 811573839, now seen corresponding path program 1 times [2020-10-13 11:17:03,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:03,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576513938] [2020-10-13 11:17:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 11:17:04,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 11:17:04,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:17:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:17:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:04,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:04,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:04,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:04,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:04,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:04,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:04,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:04,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 11:17:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 11:17:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 11:17:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:17:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:04,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576513938] [2020-10-13 11:17:04,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:04,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:04,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398090051] [2020-10-13 11:17:04,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:04,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:04,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:04,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:04,429 INFO L87 Difference]: Start difference. First operand 929 states and 1256 transitions. Second operand 8 states. [2020-10-13 11:17:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:06,059 INFO L93 Difference]: Finished difference Result 977 states and 1312 transitions. [2020-10-13 11:17:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:17:06,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-13 11:17:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:06,065 INFO L225 Difference]: With dead ends: 977 [2020-10-13 11:17:06,065 INFO L226 Difference]: Without dead ends: 955 [2020-10-13 11:17:06,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-13 11:17:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-10-13 11:17:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-13 11:17:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1256 transitions. [2020-10-13 11:17:06,140 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1256 transitions. Word has length 43 [2020-10-13 11:17:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:06,141 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1256 transitions. [2020-10-13 11:17:06,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:17:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1256 transitions. [2020-10-13 11:17:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 11:17:06,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:06,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:06,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 11:17:06,144 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:06,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:06,144 INFO L82 PathProgramCache]: Analyzing trace with hash -209494515, now seen corresponding path program 1 times [2020-10-13 11:17:06,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:06,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764087947] [2020-10-13 11:17:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:06,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 11:17:06,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:06,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 11:17:06,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:17:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:17:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:06,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:06,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:06,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:06,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:06,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:06,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:06,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:06,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:06,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:06,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:06,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 11:17:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 11:17:06,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 11:17:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:17:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:06,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764087947] [2020-10-13 11:17:06,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:06,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:06,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506406699] [2020-10-13 11:17:06,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:06,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:06,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:06,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:06,531 INFO L87 Difference]: Start difference. First operand 929 states and 1256 transitions. Second operand 8 states. [2020-10-13 11:17:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:08,550 INFO L93 Difference]: Finished difference Result 977 states and 1312 transitions. [2020-10-13 11:17:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:17:08,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-13 11:17:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:08,557 INFO L225 Difference]: With dead ends: 977 [2020-10-13 11:17:08,557 INFO L226 Difference]: Without dead ends: 955 [2020-10-13 11:17:08,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-13 11:17:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-10-13 11:17:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-13 11:17:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1256 transitions. [2020-10-13 11:17:08,631 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1256 transitions. Word has length 43 [2020-10-13 11:17:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:08,631 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1256 transitions. [2020-10-13 11:17:08,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:17:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1256 transitions. [2020-10-13 11:17:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 11:17:08,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:08,633 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] [2020-10-13 11:17:08,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 11:17:08,633 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1187615534, now seen corresponding path program 1 times [2020-10-13 11:17:08,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:08,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377074908] [2020-10-13 11:17:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:09,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 11:17:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-13 11:17:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 11:17:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:17:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:10,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:10,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:10,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:10,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:17:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 11:17:10,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 11:17:10,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:17:10,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:17:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:10,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:10,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377074908] [2020-10-13 11:17:10,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:10,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:17:10,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92196408] [2020-10-13 11:17:10,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:17:10,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:10,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:17:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:10,182 INFO L87 Difference]: Start difference. First operand 929 states and 1256 transitions. Second operand 10 states. [2020-10-13 11:17:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:12,211 INFO L93 Difference]: Finished difference Result 982 states and 1320 transitions. [2020-10-13 11:17:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:17:12,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-13 11:17:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:12,218 INFO L225 Difference]: With dead ends: 982 [2020-10-13 11:17:12,218 INFO L226 Difference]: Without dead ends: 964 [2020-10-13 11:17:12,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-10-13 11:17:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 927. [2020-10-13 11:17:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-13 11:17:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1252 transitions. [2020-10-13 11:17:12,295 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1252 transitions. Word has length 45 [2020-10-13 11:17:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:12,295 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1252 transitions. [2020-10-13 11:17:12,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:17:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1252 transitions. [2020-10-13 11:17:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 11:17:12,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:12,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:12,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 11:17:12,298 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:12,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:12,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2041858543, now seen corresponding path program 1 times [2020-10-13 11:17:12,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:12,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769036564] [2020-10-13 11:17:12,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:12,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 11:17:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-13 11:17:12,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 11:17:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:13,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:13,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:13,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:17:13,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:13,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:13,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:13,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:13,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:13,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:13,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:13,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 11:17:13,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 11:17:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:17:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:13,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:13,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 11:17:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:13,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:13,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769036564] [2020-10-13 11:17:13,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:13,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:13,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844285746] [2020-10-13 11:17:13,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:13,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:13,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:13,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:13,299 INFO L87 Difference]: Start difference. First operand 927 states and 1252 transitions. Second operand 8 states. [2020-10-13 11:17:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:15,646 INFO L93 Difference]: Finished difference Result 996 states and 1335 transitions. [2020-10-13 11:17:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:17:15,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-13 11:17:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:15,653 INFO L225 Difference]: With dead ends: 996 [2020-10-13 11:17:15,653 INFO L226 Difference]: Without dead ends: 952 [2020-10-13 11:17:15,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:17:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-13 11:17:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 917. [2020-10-13 11:17:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-10-13 11:17:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1233 transitions. [2020-10-13 11:17:15,730 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1233 transitions. Word has length 46 [2020-10-13 11:17:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:15,731 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1233 transitions. [2020-10-13 11:17:15,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:17:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1233 transitions. [2020-10-13 11:17:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 11:17:15,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:15,734 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] [2020-10-13 11:17:15,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 11:17:15,734 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:15,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash -14500796, now seen corresponding path program 1 times [2020-10-13 11:17:15,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:15,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006282169] [2020-10-13 11:17:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:16,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:17:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-13 11:17:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:17:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:17:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:16,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:17:16,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:16,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:16,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:16,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 11:17:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:16,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 11:17:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 11:17:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:16,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006282169] [2020-10-13 11:17:16,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:16,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:16,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782883403] [2020-10-13 11:17:16,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:16,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:16,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:16,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:16,918 INFO L87 Difference]: Start difference. First operand 917 states and 1233 transitions. Second operand 8 states. [2020-10-13 11:17:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:19,941 INFO L93 Difference]: Finished difference Result 2120 states and 2791 transitions. [2020-10-13 11:17:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:19,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-13 11:17:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:19,949 INFO L225 Difference]: With dead ends: 2120 [2020-10-13 11:17:19,950 INFO L226 Difference]: Without dead ends: 1281 [2020-10-13 11:17:19,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:17:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-10-13 11:17:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1111. [2020-10-13 11:17:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-13 11:17:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1469 transitions. [2020-10-13 11:17:20,059 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1469 transitions. Word has length 48 [2020-10-13 11:17:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:20,059 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1469 transitions. [2020-10-13 11:17:20,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:17:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1469 transitions. [2020-10-13 11:17:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 11:17:20,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:20,062 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] [2020-10-13 11:17:20,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 11:17:20,063 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:20,063 INFO L82 PathProgramCache]: Analyzing trace with hash -155049406, now seen corresponding path program 1 times [2020-10-13 11:17:20,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:20,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21990631] [2020-10-13 11:17:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:17:20,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 11:17:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:17:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 11:17:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:20,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:20,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:20,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:20,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 11:17:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 11:17:20,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:17:20,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:17:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:20,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21990631] [2020-10-13 11:17:20,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:20,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:17:20,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163476643] [2020-10-13 11:17:20,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:17:20,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:20,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:17:20,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:20,629 INFO L87 Difference]: Start difference. First operand 1111 states and 1469 transitions. Second operand 10 states. [2020-10-13 11:17:20,872 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-13 11:17:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:22,799 INFO L93 Difference]: Finished difference Result 1838 states and 2390 transitions. [2020-10-13 11:17:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:17:22,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-13 11:17:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:22,805 INFO L225 Difference]: With dead ends: 1838 [2020-10-13 11:17:22,806 INFO L226 Difference]: Without dead ends: 1192 [2020-10-13 11:17:22,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:17:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-10-13 11:17:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1093. [2020-10-13 11:17:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-10-13 11:17:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1427 transitions. [2020-10-13 11:17:22,912 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1427 transitions. Word has length 48 [2020-10-13 11:17:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:22,912 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1427 transitions. [2020-10-13 11:17:22,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:17:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1427 transitions. [2020-10-13 11:17:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 11:17:22,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:22,914 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] [2020-10-13 11:17:22,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 11:17:22,914 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash -21043436, now seen corresponding path program 1 times [2020-10-13 11:17:22,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:22,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451779973] [2020-10-13 11:17:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 11:17:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:23,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:23,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:23,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:23,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:23,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:23,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:23,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:23,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:23,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:23,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:17:23,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 11:17:23,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:17:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:17:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:23,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:23,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:23,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:23,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451779973] [2020-10-13 11:17:23,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:23,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:17:23,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558732582] [2020-10-13 11:17:23,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:17:23,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:23,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:17:23,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:17:23,983 INFO L87 Difference]: Start difference. First operand 1093 states and 1427 transitions. Second operand 11 states. [2020-10-13 11:17:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:25,751 INFO L93 Difference]: Finished difference Result 1177 states and 1529 transitions. [2020-10-13 11:17:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:17:25,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-13 11:17:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:25,758 INFO L225 Difference]: With dead ends: 1177 [2020-10-13 11:17:25,758 INFO L226 Difference]: Without dead ends: 1157 [2020-10-13 11:17:25,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:17:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-10-13 11:17:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1093. [2020-10-13 11:17:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-10-13 11:17:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1415 transitions. [2020-10-13 11:17:25,855 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1415 transitions. Word has length 48 [2020-10-13 11:17:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:25,855 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1415 transitions. [2020-10-13 11:17:25,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:17:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1415 transitions. [2020-10-13 11:17:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 11:17:25,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:25,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:25,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 11:17:25,858 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1291902080, now seen corresponding path program 1 times [2020-10-13 11:17:25,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:25,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707414541] [2020-10-13 11:17:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 11:17:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 11:17:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:26,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 11:17:26,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 11:17:26,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:17:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:17:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:26,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:26,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:26,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707414541] [2020-10-13 11:17:26,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:26,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:17:26,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665466990] [2020-10-13 11:17:26,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:17:26,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:26,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:17:26,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:26,812 INFO L87 Difference]: Start difference. First operand 1093 states and 1415 transitions. Second operand 12 states. [2020-10-13 11:17:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:29,713 INFO L93 Difference]: Finished difference Result 1197 states and 1542 transitions. [2020-10-13 11:17:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 11:17:29,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 11:17:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:29,720 INFO L225 Difference]: With dead ends: 1197 [2020-10-13 11:17:29,720 INFO L226 Difference]: Without dead ends: 1170 [2020-10-13 11:17:29,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-13 11:17:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-10-13 11:17:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1089. [2020-10-13 11:17:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-10-13 11:17:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1406 transitions. [2020-10-13 11:17:29,812 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1406 transitions. Word has length 49 [2020-10-13 11:17:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:29,813 INFO L479 AbstractCegarLoop]: Abstraction has 1089 states and 1406 transitions. [2020-10-13 11:17:29,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:17:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1406 transitions. [2020-10-13 11:17:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:17:29,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:29,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:29,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 11:17:29,815 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:29,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1425041063, now seen corresponding path program 1 times [2020-10-13 11:17:29,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:29,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989013613] [2020-10-13 11:17:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 11:17:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1855 [2020-10-13 11:17:31,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 11:17:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:17:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:31,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:31,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:31,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:31,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:17:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:31,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989013613] [2020-10-13 11:17:31,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:31,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:17:31,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413972116] [2020-10-13 11:17:31,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:17:31,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:31,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:17:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:31,908 INFO L87 Difference]: Start difference. First operand 1089 states and 1406 transitions. Second operand 10 states. [2020-10-13 11:17:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:34,069 INFO L93 Difference]: Finished difference Result 1974 states and 2664 transitions. [2020-10-13 11:17:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:17:34,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 11:17:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:34,078 INFO L225 Difference]: With dead ends: 1974 [2020-10-13 11:17:34,079 INFO L226 Difference]: Without dead ends: 1339 [2020-10-13 11:17:34,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-10-13 11:17:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1127. [2020-10-13 11:17:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-10-13 11:17:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1475 transitions. [2020-10-13 11:17:34,188 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1475 transitions. Word has length 52 [2020-10-13 11:17:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:34,189 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1475 transitions. [2020-10-13 11:17:34,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:17:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1475 transitions. [2020-10-13 11:17:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 11:17:34,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:34,191 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] [2020-10-13 11:17:34,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 11:17:34,191 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:34,192 INFO L82 PathProgramCache]: Analyzing trace with hash -192140927, now seen corresponding path program 1 times [2020-10-13 11:17:34,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:34,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367123664] [2020-10-13 11:17:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:17:34,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 11:17:34,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:17:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:17:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:34,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:34,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:34,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:34,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:34,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 11:17:34,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 11:17:34,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:17:34,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:17:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:34,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367123664] [2020-10-13 11:17:34,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:34,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:34,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723279883] [2020-10-13 11:17:34,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:34,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:34,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:34,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:34,572 INFO L87 Difference]: Start difference. First operand 1127 states and 1475 transitions. Second operand 8 states. [2020-10-13 11:17:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:37,126 INFO L93 Difference]: Finished difference Result 1536 states and 2041 transitions. [2020-10-13 11:17:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:17:37,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-13 11:17:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:37,133 INFO L225 Difference]: With dead ends: 1536 [2020-10-13 11:17:37,133 INFO L226 Difference]: Without dead ends: 1524 [2020-10-13 11:17:37,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-10-13 11:17:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1261. [2020-10-13 11:17:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2020-10-13 11:17:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1650 transitions. [2020-10-13 11:17:37,254 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1650 transitions. Word has length 50 [2020-10-13 11:17:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:37,254 INFO L479 AbstractCegarLoop]: Abstraction has 1261 states and 1650 transitions. [2020-10-13 11:17:37,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:17:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1650 transitions. [2020-10-13 11:17:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 11:17:37,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:37,257 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] [2020-10-13 11:17:37,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 11:17:37,257 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:37,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1458671507, now seen corresponding path program 1 times [2020-10-13 11:17:37,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:37,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8337069] [2020-10-13 11:17:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:38,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:38,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 11:17:38,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-13 11:17:38,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:17:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:17:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:38,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:38,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:38,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:38,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:38,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:17:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:38,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:38,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:17:38,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:38,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 11:17:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:38,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8337069] [2020-10-13 11:17:38,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:38,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:38,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419197377] [2020-10-13 11:17:38,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:38,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:38,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:38,738 INFO L87 Difference]: Start difference. First operand 1261 states and 1650 transitions. Second operand 8 states. [2020-10-13 11:17:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:40,989 INFO L93 Difference]: Finished difference Result 1405 states and 1802 transitions. [2020-10-13 11:17:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:17:40,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-13 11:17:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:40,995 INFO L225 Difference]: With dead ends: 1405 [2020-10-13 11:17:40,995 INFO L226 Difference]: Without dead ends: 990 [2020-10-13 11:17:41,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:17:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-13 11:17:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 903. [2020-10-13 11:17:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-13 11:17:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1133 transitions. [2020-10-13 11:17:41,084 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1133 transitions. Word has length 53 [2020-10-13 11:17:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:41,084 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1133 transitions. [2020-10-13 11:17:41,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:17:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1133 transitions. [2020-10-13 11:17:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 11:17:41,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:41,087 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] [2020-10-13 11:17:41,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 11:17:41,087 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1090292134, now seen corresponding path program 1 times [2020-10-13 11:17:41,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:41,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71083613] [2020-10-13 11:17:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:41,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:41,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 11:17:41,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 11:17:41,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 11:17:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:41,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:41,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:41,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:41,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:41,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:41,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:41,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:17:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 11:17:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:17:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:41,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:17:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:41,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:41,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:41,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:41,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:41,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:41,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71083613] [2020-10-13 11:17:41,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:41,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:17:41,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108997642] [2020-10-13 11:17:41,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:17:41,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:41,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:17:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:17:41,557 INFO L87 Difference]: Start difference. First operand 903 states and 1133 transitions. Second operand 11 states. [2020-10-13 11:17:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:43,932 INFO L93 Difference]: Finished difference Result 973 states and 1214 transitions. [2020-10-13 11:17:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:17:43,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-13 11:17:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:43,937 INFO L225 Difference]: With dead ends: 973 [2020-10-13 11:17:43,937 INFO L226 Difference]: Without dead ends: 929 [2020-10-13 11:17:43,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:17:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-10-13 11:17:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 884. [2020-10-13 11:17:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-10-13 11:17:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1109 transitions. [2020-10-13 11:17:44,002 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1109 transitions. Word has length 51 [2020-10-13 11:17:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:44,002 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1109 transitions. [2020-10-13 11:17:44,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:17:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1109 transitions. [2020-10-13 11:17:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 11:17:44,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:44,004 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] [2020-10-13 11:17:44,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 11:17:44,005 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:44,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:44,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1208522397, now seen corresponding path program 1 times [2020-10-13 11:17:44,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:44,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68167742] [2020-10-13 11:17:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 11:17:45,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-13 11:17:45,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:17:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:17:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:45,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:45,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:45,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:45,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 11:17:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 11:17:45,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 11:17:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:45,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:45,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:45,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:45,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68167742] [2020-10-13 11:17:45,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:45,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:17:45,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642540305] [2020-10-13 11:17:45,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:17:45,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:45,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:17:45,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:17:45,393 INFO L87 Difference]: Start difference. First operand 884 states and 1109 transitions. Second operand 13 states. [2020-10-13 11:17:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:47,255 INFO L93 Difference]: Finished difference Result 967 states and 1206 transitions. [2020-10-13 11:17:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:17:47,256 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-13 11:17:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:47,260 INFO L225 Difference]: With dead ends: 967 [2020-10-13 11:17:47,261 INFO L226 Difference]: Without dead ends: 963 [2020-10-13 11:17:47,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:17:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-13 11:17:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 902. [2020-10-13 11:17:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-13 11:17:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1130 transitions. [2020-10-13 11:17:47,319 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1130 transitions. Word has length 51 [2020-10-13 11:17:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:47,319 INFO L479 AbstractCegarLoop]: Abstraction has 902 states and 1130 transitions. [2020-10-13 11:17:47,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:17:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1130 transitions. [2020-10-13 11:17:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 11:17:47,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:47,321 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] [2020-10-13 11:17:47,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 11:17:47,321 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:47,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1208799227, now seen corresponding path program 1 times [2020-10-13 11:17:47,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:47,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549872246] [2020-10-13 11:17:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 11:17:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:17:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 11:17:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:48,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549872246] [2020-10-13 11:17:48,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:48,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:17:48,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54365774] [2020-10-13 11:17:48,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:17:48,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:17:48,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:17:48,600 INFO L87 Difference]: Start difference. First operand 902 states and 1130 transitions. Second operand 13 states. [2020-10-13 11:17:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:50,631 INFO L93 Difference]: Finished difference Result 1019 states and 1274 transitions. [2020-10-13 11:17:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:50,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-13 11:17:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:50,638 INFO L225 Difference]: With dead ends: 1019 [2020-10-13 11:17:50,638 INFO L226 Difference]: Without dead ends: 1003 [2020-10-13 11:17:50,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:17:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2020-10-13 11:17:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 920. [2020-10-13 11:17:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-10-13 11:17:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1151 transitions. [2020-10-13 11:17:50,697 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1151 transitions. Word has length 51 [2020-10-13 11:17:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:50,698 INFO L479 AbstractCegarLoop]: Abstraction has 920 states and 1151 transitions. [2020-10-13 11:17:50,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:17:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1151 transitions. [2020-10-13 11:17:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:17:50,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:50,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:50,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 11:17:50,700 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash 987376175, now seen corresponding path program 1 times [2020-10-13 11:17:50,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:50,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636171490] [2020-10-13 11:17:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:50,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:17:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:17:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-13 11:17:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:17:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:17:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:51,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:17:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:17:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:51,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636171490] [2020-10-13 11:17:51,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:51,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:17:51,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638101030] [2020-10-13 11:17:51,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:17:51,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:51,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:17:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:17:51,939 INFO L87 Difference]: Start difference. First operand 920 states and 1151 transitions. Second operand 13 states. [2020-10-13 11:17:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:53,669 INFO L93 Difference]: Finished difference Result 1433 states and 1819 transitions. [2020-10-13 11:17:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:53,669 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-13 11:17:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:53,674 INFO L225 Difference]: With dead ends: 1433 [2020-10-13 11:17:53,674 INFO L226 Difference]: Without dead ends: 1045 [2020-10-13 11:17:53,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:17:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-13 11:17:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 923. [2020-10-13 11:17:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-10-13 11:17:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1156 transitions. [2020-10-13 11:17:53,735 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1156 transitions. Word has length 52 [2020-10-13 11:17:53,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:53,735 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1156 transitions. [2020-10-13 11:17:53,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:17:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1156 transitions. [2020-10-13 11:17:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:17:53,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:53,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:53,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 11:17:53,736 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:53,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:53,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1519216017, now seen corresponding path program 1 times [2020-10-13 11:17:53,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:53,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484401967] [2020-10-13 11:17:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:53,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:17:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 11:17:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:17:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:17:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:54,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:54,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:17:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:17:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:54,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484401967] [2020-10-13 11:17:54,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:54,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:17:54,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513070847] [2020-10-13 11:17:54,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:17:54,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:54,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:17:54,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:54,454 INFO L87 Difference]: Start difference. First operand 923 states and 1156 transitions. Second operand 12 states. [2020-10-13 11:17:54,611 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-13 11:17:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:57,601 INFO L93 Difference]: Finished difference Result 1170 states and 1474 transitions. [2020-10-13 11:17:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 11:17:57,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-13 11:17:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:57,608 INFO L225 Difference]: With dead ends: 1170 [2020-10-13 11:17:57,608 INFO L226 Difference]: Without dead ends: 1067 [2020-10-13 11:17:57,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-13 11:17:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-10-13 11:17:57,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 875. [2020-10-13 11:17:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-10-13 11:17:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1094 transitions. [2020-10-13 11:17:57,692 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1094 transitions. Word has length 52 [2020-10-13 11:17:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:57,692 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1094 transitions. [2020-10-13 11:17:57,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:17:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1094 transitions. [2020-10-13 11:17:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:17:57,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:57,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:57,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 11:17:57,694 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:57,694 INFO L82 PathProgramCache]: Analyzing trace with hash -581698746, now seen corresponding path program 1 times [2020-10-13 11:17:57,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:57,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109468208] [2020-10-13 11:17:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:17:57,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 11:17:57,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:17:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:17:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:57,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:57,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:57,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:57,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:58,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:17:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 11:17:58,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 11:17:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:58,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:17:58,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:58,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:17:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:58,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109468208] [2020-10-13 11:17:58,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:58,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:17:58,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461132995] [2020-10-13 11:17:58,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:17:58,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:58,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:17:58,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:17:58,042 INFO L87 Difference]: Start difference. First operand 875 states and 1094 transitions. Second operand 8 states. [2020-10-13 11:18:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:00,060 INFO L93 Difference]: Finished difference Result 1209 states and 1533 transitions. [2020-10-13 11:18:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:18:00,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-13 11:18:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:00,068 INFO L225 Difference]: With dead ends: 1209 [2020-10-13 11:18:00,068 INFO L226 Difference]: Without dead ends: 1179 [2020-10-13 11:18:00,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:18:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-13 11:18:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 962. [2020-10-13 11:18:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-13 11:18:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1195 transitions. [2020-10-13 11:18:00,183 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1195 transitions. Word has length 52 [2020-10-13 11:18:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:00,183 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1195 transitions. [2020-10-13 11:18:00,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:18:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1195 transitions. [2020-10-13 11:18:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:18:00,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:00,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:00,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 11:18:00,186 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:00,186 INFO L82 PathProgramCache]: Analyzing trace with hash -724978104, now seen corresponding path program 1 times [2020-10-13 11:18:00,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:00,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217220679] [2020-10-13 11:18:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:18:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 11:18:00,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:18:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:00,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:00,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:00,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:00,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:18:00,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:00,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:00,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:00,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:00,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:00,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:18:00,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 11:18:00,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:18:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:18:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:00,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:18:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:00,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217220679] [2020-10-13 11:18:00,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:00,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:00,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749965375] [2020-10-13 11:18:00,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:00,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:00,652 INFO L87 Difference]: Start difference. First operand 962 states and 1195 transitions. Second operand 12 states. [2020-10-13 11:18:00,807 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-13 11:18:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:03,073 INFO L93 Difference]: Finished difference Result 1060 states and 1312 transitions. [2020-10-13 11:18:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:18:03,073 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-13 11:18:03,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:03,077 INFO L225 Difference]: With dead ends: 1060 [2020-10-13 11:18:03,077 INFO L226 Difference]: Without dead ends: 935 [2020-10-13 11:18:03,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-13 11:18:03,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-10-13 11:18:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 853. [2020-10-13 11:18:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-10-13 11:18:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1055 transitions. [2020-10-13 11:18:03,141 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1055 transitions. Word has length 52 [2020-10-13 11:18:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:03,141 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1055 transitions. [2020-10-13 11:18:03,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1055 transitions. [2020-10-13 11:18:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 11:18:03,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:03,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:03,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 11:18:03,143 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash -31006542, now seen corresponding path program 1 times [2020-10-13 11:18:03,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:03,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749963120] [2020-10-13 11:18:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 11:18:03,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 11:18:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 11:18:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:18:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:18:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 11:18:03,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 11:18:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 11:18:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:18:03,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:18:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:03,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:03,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:03,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749963120] [2020-10-13 11:18:03,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:03,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:03,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116709943] [2020-10-13 11:18:03,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:03,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:03,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:03,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:03,866 INFO L87 Difference]: Start difference. First operand 853 states and 1055 transitions. Second operand 14 states. [2020-10-13 11:18:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:06,190 INFO L93 Difference]: Finished difference Result 926 states and 1142 transitions. [2020-10-13 11:18:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:18:06,191 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-13 11:18:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:06,194 INFO L225 Difference]: With dead ends: 926 [2020-10-13 11:18:06,194 INFO L226 Difference]: Without dead ends: 898 [2020-10-13 11:18:06,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:18:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-13 11:18:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 838. [2020-10-13 11:18:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-13 11:18:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1038 transitions. [2020-10-13 11:18:06,260 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1038 transitions. Word has length 53 [2020-10-13 11:18:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:06,261 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 1038 transitions. [2020-10-13 11:18:06,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1038 transitions. [2020-10-13 11:18:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:18:06,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:06,262 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] [2020-10-13 11:18:06,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 11:18:06,262 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:06,263 INFO L82 PathProgramCache]: Analyzing trace with hash 888645287, now seen corresponding path program 1 times [2020-10-13 11:18:06,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:06,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505492195] [2020-10-13 11:18:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 11:18:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 11:18:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 11:18:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:18:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:06,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:06,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:06,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:06,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:06,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:18:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:06,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:06,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:06,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 11:18:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:06,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:06,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:06,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:06,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:06,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505492195] [2020-10-13 11:18:06,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:06,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:18:06,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967384695] [2020-10-13 11:18:06,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:18:06,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:06,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:18:06,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:18:06,639 INFO L87 Difference]: Start difference. First operand 838 states and 1038 transitions. Second operand 8 states. [2020-10-13 11:18:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:07,783 INFO L93 Difference]: Finished difference Result 1229 states and 1547 transitions. [2020-10-13 11:18:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:18:07,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-13 11:18:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:07,788 INFO L225 Difference]: With dead ends: 1229 [2020-10-13 11:18:07,789 INFO L226 Difference]: Without dead ends: 906 [2020-10-13 11:18:07,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-13 11:18:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 842. [2020-10-13 11:18:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-13 11:18:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1041 transitions. [2020-10-13 11:18:07,882 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1041 transitions. Word has length 58 [2020-10-13 11:18:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:07,883 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1041 transitions. [2020-10-13 11:18:07,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:18:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1041 transitions. [2020-10-13 11:18:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 11:18:07,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:07,885 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] [2020-10-13 11:18:07,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 11:18:07,885 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:07,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1936985802, now seen corresponding path program 1 times [2020-10-13 11:18:07,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:07,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592319225] [2020-10-13 11:18:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 11:18:08,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 11:18:08,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 11:18:08,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:18:08,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:08,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:18:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:08,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:08,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:08,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:08,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:08,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 11:18:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 11:18:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 11:18:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 11:18:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:18:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:08,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592319225] [2020-10-13 11:18:08,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:08,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 11:18:08,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526405888] [2020-10-13 11:18:08,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:18:08,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:08,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:18:08,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:18:08,521 INFO L87 Difference]: Start difference. First operand 842 states and 1041 transitions. Second operand 9 states. [2020-10-13 11:18:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:10,414 INFO L93 Difference]: Finished difference Result 988 states and 1223 transitions. [2020-10-13 11:18:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:18:10,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-13 11:18:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:10,418 INFO L225 Difference]: With dead ends: 988 [2020-10-13 11:18:10,419 INFO L226 Difference]: Without dead ends: 970 [2020-10-13 11:18:10,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:18:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-13 11:18:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 845. [2020-10-13 11:18:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-13 11:18:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1049 transitions. [2020-10-13 11:18:10,485 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1049 transitions. Word has length 54 [2020-10-13 11:18:10,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:10,485 INFO L479 AbstractCegarLoop]: Abstraction has 845 states and 1049 transitions. [2020-10-13 11:18:10,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:18:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1049 transitions. [2020-10-13 11:18:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 11:18:10,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:10,486 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] [2020-10-13 11:18:10,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 11:18:10,486 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:10,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:10,487 INFO L82 PathProgramCache]: Analyzing trace with hash -15936700, now seen corresponding path program 1 times [2020-10-13 11:18:10,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:10,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846411399] [2020-10-13 11:18:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:10,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 11:18:10,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 11:18:10,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 11:18:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:10,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:10,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:10,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:18:10,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:10,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:10,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:10,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:10,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:10,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:10,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:10,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:10,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:18:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:10,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:10,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 11:18:10,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 11:18:10,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 11:18:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:10,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:11,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:11,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:11,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 11:18:11,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:18:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:11,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:11,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:11,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:11,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:11,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846411399] [2020-10-13 11:18:11,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:11,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:18:11,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876469479] [2020-10-13 11:18:11,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:18:11,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:18:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:18:11,043 INFO L87 Difference]: Start difference. First operand 845 states and 1049 transitions. Second operand 10 states. [2020-10-13 11:18:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:12,476 INFO L93 Difference]: Finished difference Result 1183 states and 1487 transitions. [2020-10-13 11:18:12,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:18:12,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-13 11:18:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:12,480 INFO L225 Difference]: With dead ends: 1183 [2020-10-13 11:18:12,480 INFO L226 Difference]: Without dead ends: 837 [2020-10-13 11:18:12,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:18:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-10-13 11:18:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 769. [2020-10-13 11:18:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-13 11:18:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 940 transitions. [2020-10-13 11:18:12,594 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 940 transitions. Word has length 64 [2020-10-13 11:18:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:12,594 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 940 transitions. [2020-10-13 11:18:12,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:18:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 940 transitions. [2020-10-13 11:18:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 11:18:12,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:12,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:12,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 11:18:12,596 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1108815620, now seen corresponding path program 1 times [2020-10-13 11:18:12,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:12,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778774193] [2020-10-13 11:18:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 11:18:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 11:18:13,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 11:18:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:18:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:13,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:13,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:13,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:13,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:13,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:13,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 11:18:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 11:18:13,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 11:18:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:18:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:13,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:13,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 11:18:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:13,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:13,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:13,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778774193] [2020-10-13 11:18:13,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:13,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:13,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125797791] [2020-10-13 11:18:13,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:13,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:13,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:13,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:13,326 INFO L87 Difference]: Start difference. First operand 769 states and 940 transitions. Second operand 12 states. [2020-10-13 11:18:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:15,063 INFO L93 Difference]: Finished difference Result 857 states and 1043 transitions. [2020-10-13 11:18:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:18:15,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-13 11:18:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:15,067 INFO L225 Difference]: With dead ends: 857 [2020-10-13 11:18:15,067 INFO L226 Difference]: Without dead ends: 822 [2020-10-13 11:18:15,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:15,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-13 11:18:15,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 753. [2020-10-13 11:18:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-13 11:18:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 919 transitions. [2020-10-13 11:18:15,148 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 919 transitions. Word has length 59 [2020-10-13 11:18:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:15,149 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 919 transitions. [2020-10-13 11:18:15,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 919 transitions. [2020-10-13 11:18:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:18:15,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:15,151 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] [2020-10-13 11:18:15,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 11:18:15,151 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:15,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1136965517, now seen corresponding path program 1 times [2020-10-13 11:18:15,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:15,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371253003] [2020-10-13 11:18:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 11:18:15,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-13 11:18:15,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 11:18:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:18:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:18:15,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:15,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:15,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:15,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:15,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:15,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 11:18:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 11:18:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 11:18:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:18:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:18:15,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:18:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:15,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371253003] [2020-10-13 11:18:15,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:15,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:18:15,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547677447] [2020-10-13 11:18:15,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:18:15,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:15,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:18:15,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:18:15,742 INFO L87 Difference]: Start difference. First operand 753 states and 919 transitions. Second operand 13 states. [2020-10-13 11:18:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:17,616 INFO L93 Difference]: Finished difference Result 824 states and 1002 transitions. [2020-10-13 11:18:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:18:17,616 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-13 11:18:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:17,619 INFO L225 Difference]: With dead ends: 824 [2020-10-13 11:18:17,620 INFO L226 Difference]: Without dead ends: 806 [2020-10-13 11:18:17,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-10-13 11:18:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 749. [2020-10-13 11:18:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-13 11:18:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 913 transitions. [2020-10-13 11:18:17,683 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 913 transitions. Word has length 58 [2020-10-13 11:18:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:17,683 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 913 transitions. [2020-10-13 11:18:17,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:18:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 913 transitions. [2020-10-13 11:18:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 11:18:17,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:17,685 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] [2020-10-13 11:18:17,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 11:18:17,686 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1833311275, now seen corresponding path program 1 times [2020-10-13 11:18:17,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:17,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855367635] [2020-10-13 11:18:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:17,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:17,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:17,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 11:18:17,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:17,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 11:18:17,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 11:18:17,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:17,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:17,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:17,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:17,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:17,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:17,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:17,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:17,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:17,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:17,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:17,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:17,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:18:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:18,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:18,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 11:18:18,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 11:18:18,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 11:18:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:18:18,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:18,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:18,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:18,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:18,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:18,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:18,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:18,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:18,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:18,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:18,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:18,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:18,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:18,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855367635] [2020-10-13 11:18:18,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:18,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:18,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658313938] [2020-10-13 11:18:18,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:18,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:18,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:18,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:18,077 INFO L87 Difference]: Start difference. First operand 749 states and 913 transitions. Second operand 12 states. [2020-10-13 11:18:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:19,904 INFO L93 Difference]: Finished difference Result 1077 states and 1331 transitions. [2020-10-13 11:18:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:18:19,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-13 11:18:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:19,909 INFO L225 Difference]: With dead ends: 1077 [2020-10-13 11:18:19,910 INFO L226 Difference]: Without dead ends: 807 [2020-10-13 11:18:19,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-10-13 11:18:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-10-13 11:18:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 744. [2020-10-13 11:18:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-13 11:18:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 902 transitions. [2020-10-13 11:18:19,994 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 902 transitions. Word has length 68 [2020-10-13 11:18:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:19,995 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 902 transitions. [2020-10-13 11:18:19,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 902 transitions. [2020-10-13 11:18:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 11:18:19,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:19,997 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] [2020-10-13 11:18:19,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 11:18:19,997 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:19,998 INFO L82 PathProgramCache]: Analyzing trace with hash 569075231, now seen corresponding path program 1 times [2020-10-13 11:18:19,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:19,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323868140] [2020-10-13 11:18:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 11:18:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-13 11:18:21,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:18:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:18:21,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 11:18:21,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 11:18:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:21,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:18:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 11:18:21,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:18:21,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:18:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:21,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:21,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:21,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:18:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:21,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323868140] [2020-10-13 11:18:21,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:21,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:21,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7778897] [2020-10-13 11:18:21,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:21,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:21,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:21,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:21,402 INFO L87 Difference]: Start difference. First operand 744 states and 902 transitions. Second operand 12 states. [2020-10-13 11:18:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:23,831 INFO L93 Difference]: Finished difference Result 819 states and 990 transitions. [2020-10-13 11:18:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:18:23,832 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-13 11:18:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:23,838 INFO L225 Difference]: With dead ends: 819 [2020-10-13 11:18:23,838 INFO L226 Difference]: Without dead ends: 781 [2020-10-13 11:18:23,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:18:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-13 11:18:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 724. [2020-10-13 11:18:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-13 11:18:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 879 transitions. [2020-10-13 11:18:23,893 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 879 transitions. Word has length 61 [2020-10-13 11:18:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:23,893 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 879 transitions. [2020-10-13 11:18:23,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 879 transitions. [2020-10-13 11:18:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 11:18:23,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:23,894 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] [2020-10-13 11:18:23,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 11:18:23,895 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash 4723346, now seen corresponding path program 1 times [2020-10-13 11:18:23,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:23,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530140062] [2020-10-13 11:18:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 11:18:24,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-13 11:18:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:18:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:24,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:18:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:24,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:24,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:24,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:24,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:24,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:18:24,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 11:18:24,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 11:18:24,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:24,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:18:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 11:18:24,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:18:24,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:18:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:24,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:24,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:24,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:24,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:24,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:18:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:18:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:24,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530140062] [2020-10-13 11:18:24,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:24,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:18:24,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498521172] [2020-10-13 11:18:24,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:18:24,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:24,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:18:24,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:18:24,653 INFO L87 Difference]: Start difference. First operand 724 states and 879 transitions. Second operand 11 states. [2020-10-13 11:18:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:26,286 INFO L93 Difference]: Finished difference Result 791 states and 958 transitions. [2020-10-13 11:18:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:18:26,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-13 11:18:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:26,290 INFO L225 Difference]: With dead ends: 791 [2020-10-13 11:18:26,290 INFO L226 Difference]: Without dead ends: 759 [2020-10-13 11:18:26,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-13 11:18:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 697. [2020-10-13 11:18:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-13 11:18:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 847 transitions. [2020-10-13 11:18:26,344 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 847 transitions. Word has length 62 [2020-10-13 11:18:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:26,344 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 847 transitions. [2020-10-13 11:18:26,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:18:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 847 transitions. [2020-10-13 11:18:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 11:18:26,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:26,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:26,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 11:18:26,346 INFO L427 AbstractCegarLoop]: === Iteration 41 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:26,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1152303328, now seen corresponding path program 1 times [2020-10-13 11:18:26,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:26,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383423006] [2020-10-13 11:18:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 11:18:27,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-13 11:18:27,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 11:18:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:27,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:18:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:18:27,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:18:27,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:18:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:18:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:27,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:27,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383423006] [2020-10-13 11:18:27,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:27,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:18:27,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532374741] [2020-10-13 11:18:27,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:18:27,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:27,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:18:27,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:18:27,568 INFO L87 Difference]: Start difference. First operand 697 states and 847 transitions. Second operand 10 states. [2020-10-13 11:18:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:29,557 INFO L93 Difference]: Finished difference Result 870 states and 1049 transitions. [2020-10-13 11:18:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:18:29,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-13 11:18:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:29,560 INFO L225 Difference]: With dead ends: 870 [2020-10-13 11:18:29,561 INFO L226 Difference]: Without dead ends: 757 [2020-10-13 11:18:29,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:18:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-10-13 11:18:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 705. [2020-10-13 11:18:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-10-13 11:18:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 855 transitions. [2020-10-13 11:18:29,615 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 855 transitions. Word has length 63 [2020-10-13 11:18:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:29,616 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 855 transitions. [2020-10-13 11:18:29,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:18:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 855 transitions. [2020-10-13 11:18:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 11:18:29,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:29,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:29,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 11:18:29,618 INFO L427 AbstractCegarLoop]: === Iteration 42 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:29,618 INFO L82 PathProgramCache]: Analyzing trace with hash -862866401, now seen corresponding path program 1 times [2020-10-13 11:18:29,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:29,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345928808] [2020-10-13 11:18:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 11:18:30,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:30,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-13 11:18:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:30,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 11:18:30,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:18:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:30,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:30,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:30,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:30,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:30,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 11:18:30,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:30,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 11:18:30,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 11:18:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:18:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:18:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:18:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:18:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:30,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 11:18:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345928808] [2020-10-13 11:18:30,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:30,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:30,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528954514] [2020-10-13 11:18:30,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:30,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:30,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:30,460 INFO L87 Difference]: Start difference. First operand 705 states and 855 transitions. Second operand 12 states. [2020-10-13 11:18:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:32,480 INFO L93 Difference]: Finished difference Result 764 states and 924 transitions. [2020-10-13 11:18:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:18:32,481 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-13 11:18:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:32,483 INFO L225 Difference]: With dead ends: 764 [2020-10-13 11:18:32,483 INFO L226 Difference]: Without dead ends: 718 [2020-10-13 11:18:32,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:18:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-13 11:18:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 669. [2020-10-13 11:18:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-13 11:18:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 804 transitions. [2020-10-13 11:18:32,562 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 804 transitions. Word has length 63 [2020-10-13 11:18:32,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:32,563 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 804 transitions. [2020-10-13 11:18:32,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 804 transitions. [2020-10-13 11:18:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 11:18:32,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:32,565 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] [2020-10-13 11:18:32,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 11:18:32,565 INFO L427 AbstractCegarLoop]: === Iteration 43 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:32,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1148358352, now seen corresponding path program 1 times [2020-10-13 11:18:32,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:32,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526070826] [2020-10-13 11:18:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:32,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 11:18:32,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-13 11:18:32,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 11:18:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:32,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:32,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:32,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:32,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:32,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:32,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:32,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:32,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:33,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:33,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:33,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:33,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:18:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:33,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 11:18:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:18:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:33,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:33,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:33,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:33,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526070826] [2020-10-13 11:18:33,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:33,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:33,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351836853] [2020-10-13 11:18:33,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:33,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:33,135 INFO L87 Difference]: Start difference. First operand 669 states and 804 transitions. Second operand 12 states. [2020-10-13 11:18:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:34,978 INFO L93 Difference]: Finished difference Result 1001 states and 1214 transitions. [2020-10-13 11:18:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:18:34,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-13 11:18:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:34,982 INFO L225 Difference]: With dead ends: 1001 [2020-10-13 11:18:34,982 INFO L226 Difference]: Without dead ends: 769 [2020-10-13 11:18:34,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-13 11:18:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 669. [2020-10-13 11:18:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-13 11:18:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 802 transitions. [2020-10-13 11:18:35,039 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 802 transitions. Word has length 71 [2020-10-13 11:18:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:35,039 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 802 transitions. [2020-10-13 11:18:35,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 802 transitions. [2020-10-13 11:18:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 11:18:35,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:35,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:35,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 11:18:35,042 INFO L427 AbstractCegarLoop]: === Iteration 44 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:35,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:35,042 INFO L82 PathProgramCache]: Analyzing trace with hash -424680973, now seen corresponding path program 1 times [2020-10-13 11:18:35,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:35,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554002898] [2020-10-13 11:18:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:35,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:35,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 11:18:35,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 11:18:35,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:18:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 11:18:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:18:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:35,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:35,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:35,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:35,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:35,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:35,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:35,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:35,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:35,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:35,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:35,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:35,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:35,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 11:18:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:18:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:18:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:35,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554002898] [2020-10-13 11:18:35,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:35,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:35,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001284472] [2020-10-13 11:18:35,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:35,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:35,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:35,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:35,490 INFO L87 Difference]: Start difference. First operand 669 states and 802 transitions. Second operand 14 states. [2020-10-13 11:18:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:37,371 INFO L93 Difference]: Finished difference Result 743 states and 888 transitions. [2020-10-13 11:18:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:18:37,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-13 11:18:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:37,374 INFO L225 Difference]: With dead ends: 743 [2020-10-13 11:18:37,374 INFO L226 Difference]: Without dead ends: 722 [2020-10-13 11:18:37,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-10-13 11:18:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 665. [2020-10-13 11:18:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-10-13 11:18:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 796 transitions. [2020-10-13 11:18:37,425 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 796 transitions. Word has length 63 [2020-10-13 11:18:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:37,425 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 796 transitions. [2020-10-13 11:18:37,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:37,425 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 796 transitions. [2020-10-13 11:18:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 11:18:37,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:37,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:37,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 11:18:37,427 INFO L427 AbstractCegarLoop]: === Iteration 45 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:37,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1434577785, now seen corresponding path program 1 times [2020-10-13 11:18:37,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:37,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731059502] [2020-10-13 11:18:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:37,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 11:18:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:18:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:37,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:37,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:37,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 11:18:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:18:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:37,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:37,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:18:37,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:18:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:37,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731059502] [2020-10-13 11:18:37,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:37,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:37,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119294228] [2020-10-13 11:18:37,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:37,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:37,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:37,909 INFO L87 Difference]: Start difference. First operand 665 states and 796 transitions. Second operand 14 states. [2020-10-13 11:18:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:39,701 INFO L93 Difference]: Finished difference Result 739 states and 882 transitions. [2020-10-13 11:18:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:18:39,702 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-13 11:18:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:39,704 INFO L225 Difference]: With dead ends: 739 [2020-10-13 11:18:39,704 INFO L226 Difference]: Without dead ends: 717 [2020-10-13 11:18:39,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-13 11:18:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 660. [2020-10-13 11:18:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-10-13 11:18:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 789 transitions. [2020-10-13 11:18:39,789 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 789 transitions. Word has length 64 [2020-10-13 11:18:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:39,790 INFO L479 AbstractCegarLoop]: Abstraction has 660 states and 789 transitions. [2020-10-13 11:18:39,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 789 transitions. [2020-10-13 11:18:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 11:18:39,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:39,792 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] [2020-10-13 11:18:39,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 11:18:39,792 INFO L427 AbstractCegarLoop]: === Iteration 46 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1930278041, now seen corresponding path program 1 times [2020-10-13 11:18:39,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:39,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368248088] [2020-10-13 11:18:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:39,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:40,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 11:18:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 11:18:40,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:18:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 11:18:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:18:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:40,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:40,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:40,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:40,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:40,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:40,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:40,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:40,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:40,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:40,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 11:18:40,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:18:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:18:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:40,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368248088] [2020-10-13 11:18:40,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:40,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:40,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325073096] [2020-10-13 11:18:40,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:40,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:40,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:40,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:40,337 INFO L87 Difference]: Start difference. First operand 660 states and 789 transitions. Second operand 14 states. [2020-10-13 11:18:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:42,116 INFO L93 Difference]: Finished difference Result 734 states and 875 transitions. [2020-10-13 11:18:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:18:42,116 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-13 11:18:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:42,119 INFO L225 Difference]: With dead ends: 734 [2020-10-13 11:18:42,119 INFO L226 Difference]: Without dead ends: 713 [2020-10-13 11:18:42,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-13 11:18:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 656. [2020-10-13 11:18:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-13 11:18:42,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 783 transitions. [2020-10-13 11:18:42,195 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 783 transitions. Word has length 64 [2020-10-13 11:18:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:42,195 INFO L479 AbstractCegarLoop]: Abstraction has 656 states and 783 transitions. [2020-10-13 11:18:42,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 783 transitions. [2020-10-13 11:18:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 11:18:42,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:42,197 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] [2020-10-13 11:18:42,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 11:18:42,197 INFO L427 AbstractCegarLoop]: === Iteration 47 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:42,198 INFO L82 PathProgramCache]: Analyzing trace with hash 95437333, now seen corresponding path program 1 times [2020-10-13 11:18:42,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:42,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144183655] [2020-10-13 11:18:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:42,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:42,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 11:18:42,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:42,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 11:18:42,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 11:18:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:18:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:42,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:42,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:42,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:42,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:42,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:42,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:42,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:42,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:42,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:42,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:18:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 11:18:42,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 11:18:42,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 11:18:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 11:18:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:42,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:42,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:18:42,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:18:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:42,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144183655] [2020-10-13 11:18:42,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:42,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:18:42,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946871335] [2020-10-13 11:18:42,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:18:42,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:42,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:18:42,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:18:42,710 INFO L87 Difference]: Start difference. First operand 656 states and 783 transitions. Second operand 13 states. [2020-10-13 11:18:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:44,304 INFO L93 Difference]: Finished difference Result 724 states and 863 transitions. [2020-10-13 11:18:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:18:44,305 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-13 11:18:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:44,307 INFO L225 Difference]: With dead ends: 724 [2020-10-13 11:18:44,308 INFO L226 Difference]: Without dead ends: 688 [2020-10-13 11:18:44,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-10-13 11:18:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 595. [2020-10-13 11:18:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-13 11:18:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 712 transitions. [2020-10-13 11:18:44,356 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 712 transitions. Word has length 64 [2020-10-13 11:18:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:44,356 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 712 transitions. [2020-10-13 11:18:44,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:18:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 712 transitions. [2020-10-13 11:18:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 11:18:44,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:44,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:44,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 11:18:44,357 INFO L427 AbstractCegarLoop]: === Iteration 48 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1122617494, now seen corresponding path program 1 times [2020-10-13 11:18:44,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:44,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894759168] [2020-10-13 11:18:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 11:18:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:44,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:44,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:44,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:44,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:44,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:18:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:44,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:18:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:44,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:18:44,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:44,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894759168] [2020-10-13 11:18:44,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:44,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 11:18:44,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52620257] [2020-10-13 11:18:44,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:18:44,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:44,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:18:44,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:18:44,783 INFO L87 Difference]: Start difference. First operand 595 states and 712 transitions. Second operand 9 states. [2020-10-13 11:18:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:46,028 INFO L93 Difference]: Finished difference Result 1051 states and 1276 transitions. [2020-10-13 11:18:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:18:46,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-13 11:18:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:46,038 INFO L225 Difference]: With dead ends: 1051 [2020-10-13 11:18:46,038 INFO L226 Difference]: Without dead ends: 792 [2020-10-13 11:18:46,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:18:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-13 11:18:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 716. [2020-10-13 11:18:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-10-13 11:18:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 859 transitions. [2020-10-13 11:18:46,122 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 859 transitions. Word has length 73 [2020-10-13 11:18:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:46,123 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 859 transitions. [2020-10-13 11:18:46,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:18:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 859 transitions. [2020-10-13 11:18:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 11:18:46,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:46,124 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] [2020-10-13 11:18:46,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 11:18:46,124 INFO L427 AbstractCegarLoop]: === Iteration 49 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash -225813176, now seen corresponding path program 1 times [2020-10-13 11:18:46,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:46,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846505497] [2020-10-13 11:18:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 11:18:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 11:18:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:46,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:18:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 11:18:46,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:18:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 11:18:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 11:18:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:18:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:46,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846505497] [2020-10-13 11:18:46,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:46,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:46,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871602899] [2020-10-13 11:18:46,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:46,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:46,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:46,569 INFO L87 Difference]: Start difference. First operand 716 states and 859 transitions. Second operand 14 states. [2020-10-13 11:18:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:48,137 INFO L93 Difference]: Finished difference Result 780 states and 934 transitions. [2020-10-13 11:18:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:18:48,138 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-13 11:18:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:48,140 INFO L225 Difference]: With dead ends: 780 [2020-10-13 11:18:48,140 INFO L226 Difference]: Without dead ends: 737 [2020-10-13 11:18:48,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:18:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-13 11:18:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 690. [2020-10-13 11:18:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-13 11:18:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 827 transitions. [2020-10-13 11:18:48,229 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 827 transitions. Word has length 68 [2020-10-13 11:18:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:48,229 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 827 transitions. [2020-10-13 11:18:48,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 827 transitions. [2020-10-13 11:18:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 11:18:48,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:48,230 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] [2020-10-13 11:18:48,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 11:18:48,231 INFO L427 AbstractCegarLoop]: === Iteration 50 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:48,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1321469063, now seen corresponding path program 1 times [2020-10-13 11:18:48,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:48,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635265090] [2020-10-13 11:18:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 11:18:48,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 11:18:48,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 11:18:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:18:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:48,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:48,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:18:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:18:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:48,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:48,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:48,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:48,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 11:18:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:18:48,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:18:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:18:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:18:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:48,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635265090] [2020-10-13 11:18:48,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:48,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:18:48,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780546360] [2020-10-13 11:18:48,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:18:48,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:18:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:18:48,626 INFO L87 Difference]: Start difference. First operand 690 states and 827 transitions. Second operand 11 states. [2020-10-13 11:18:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:50,428 INFO L93 Difference]: Finished difference Result 1042 states and 1260 transitions. [2020-10-13 11:18:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 11:18:50,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-13 11:18:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:50,431 INFO L225 Difference]: With dead ends: 1042 [2020-10-13 11:18:50,431 INFO L226 Difference]: Without dead ends: 725 [2020-10-13 11:18:50,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:18:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-13 11:18:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 672. [2020-10-13 11:18:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2020-10-13 11:18:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 797 transitions. [2020-10-13 11:18:50,497 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 797 transitions. Word has length 82 [2020-10-13 11:18:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:50,497 INFO L479 AbstractCegarLoop]: Abstraction has 672 states and 797 transitions. [2020-10-13 11:18:50,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:18:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 797 transitions. [2020-10-13 11:18:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 11:18:50,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:50,498 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] [2020-10-13 11:18:50,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 11:18:50,499 INFO L427 AbstractCegarLoop]: === Iteration 51 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:50,499 INFO L82 PathProgramCache]: Analyzing trace with hash 531350456, now seen corresponding path program 1 times [2020-10-13 11:18:50,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:50,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014535613] [2020-10-13 11:18:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:50,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 11:18:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 11:18:50,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 11:18:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:50,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:50,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:18:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:51,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:18:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:51,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:51,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 11:18:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:51,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 11:18:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:51,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:51,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014535613] [2020-10-13 11:18:51,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:51,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:51,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28816211] [2020-10-13 11:18:51,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:51,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:51,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:51,153 INFO L87 Difference]: Start difference. First operand 672 states and 797 transitions. Second operand 14 states. [2020-10-13 11:18:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:53,206 INFO L93 Difference]: Finished difference Result 1077 states and 1320 transitions. [2020-10-13 11:18:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 11:18:53,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-13 11:18:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:53,210 INFO L225 Difference]: With dead ends: 1077 [2020-10-13 11:18:53,210 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 11:18:53,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-13 11:18:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 11:18:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 636. [2020-10-13 11:18:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-13 11:18:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 751 transitions. [2020-10-13 11:18:53,264 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 751 transitions. Word has length 83 [2020-10-13 11:18:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:53,265 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 751 transitions. [2020-10-13 11:18:53,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 751 transitions. [2020-10-13 11:18:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 11:18:53,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:53,266 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] [2020-10-13 11:18:53,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 11:18:53,267 INFO L427 AbstractCegarLoop]: === Iteration 52 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1163563034, now seen corresponding path program 1 times [2020-10-13 11:18:53,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:53,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013944253] [2020-10-13 11:18:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 11:18:54,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:18:54,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-13 11:18:54,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:54,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 11:18:54,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 11:18:54,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:54,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:54,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:54,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:18:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 11:18:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 11:18:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:18:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:54,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 11:18:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:18:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 11:18:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:54,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:54,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:54,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:54,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:54,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013944253] [2020-10-13 11:18:54,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:54,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:54,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120951515] [2020-10-13 11:18:54,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:54,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:54,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:54,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:54,927 INFO L87 Difference]: Start difference. First operand 636 states and 751 transitions. Second operand 14 states. [2020-10-13 11:18:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:56,464 INFO L93 Difference]: Finished difference Result 706 states and 834 transitions. [2020-10-13 11:18:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:18:56,465 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-13 11:18:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:56,467 INFO L225 Difference]: With dead ends: 706 [2020-10-13 11:18:56,467 INFO L226 Difference]: Without dead ends: 685 [2020-10-13 11:18:56,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:18:56,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-13 11:18:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 636. [2020-10-13 11:18:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-13 11:18:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 750 transitions. [2020-10-13 11:18:56,518 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 750 transitions. Word has length 87 [2020-10-13 11:18:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:56,518 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 750 transitions. [2020-10-13 11:18:56,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 750 transitions. [2020-10-13 11:18:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 11:18:56,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:56,520 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] [2020-10-13 11:18:56,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 11:18:56,520 INFO L427 AbstractCegarLoop]: === Iteration 53 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash -71938752, now seen corresponding path program 1 times [2020-10-13 11:18:56,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:56,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295952634] [2020-10-13 11:18:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:56,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 11:18:56,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 11:18:56,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:18:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 11:18:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:56,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:56,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:56,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:56,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:56,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:18:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:18:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:18:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 11:18:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:56,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:18:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:56,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:56,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 11:18:56,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:56,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:18:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:57,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:57,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 11:18:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:18:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:18:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:18:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:18:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 11:18:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:57,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:18:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:57,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295952634] [2020-10-13 11:18:57,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:57,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:18:57,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71690993] [2020-10-13 11:18:57,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:18:57,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:57,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:18:57,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:18:57,066 INFO L87 Difference]: Start difference. First operand 636 states and 750 transitions. Second operand 14 states. [2020-10-13 11:18:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:59,140 INFO L93 Difference]: Finished difference Result 1272 states and 1484 transitions. [2020-10-13 11:18:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 11:18:59,141 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-13 11:18:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:59,143 INFO L225 Difference]: With dead ends: 1272 [2020-10-13 11:18:59,143 INFO L226 Difference]: Without dead ends: 872 [2020-10-13 11:18:59,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-13 11:18:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-13 11:18:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 761. [2020-10-13 11:18:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-13 11:18:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 884 transitions. [2020-10-13 11:18:59,209 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 884 transitions. Word has length 84 [2020-10-13 11:18:59,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:59,209 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 884 transitions. [2020-10-13 11:18:59,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:18:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 884 transitions. [2020-10-13 11:18:59,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 11:18:59,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:59,211 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] [2020-10-13 11:18:59,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 11:18:59,211 INFO L427 AbstractCegarLoop]: === Iteration 54 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:59,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:59,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1790671204, now seen corresponding path program 1 times [2020-10-13 11:18:59,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:59,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600029299] [2020-10-13 11:18:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 11:18:59,235 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 11:18:59,235 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 11:18:59,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 11:18:59,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:18:59 BoogieIcfgContainer [2020-10-13 11:18:59,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 11:18:59,282 INFO L168 Benchmark]: Toolchain (without parser) took 163000.28 ms. Allocated memory was 147.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 100.4 MB in the beginning and 515.0 MB in the end (delta: -414.6 MB). Peak memory consumption was 706.4 MB. Max. memory is 7.1 GB. [2020-10-13 11:18:59,283 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 11:18:59,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.61 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 100.2 MB in the beginning and 172.5 MB in the end (delta: -72.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-10-13 11:18:59,284 INFO L168 Benchmark]: Boogie Preprocessor took 103.72 ms. Allocated memory is still 206.0 MB. Free memory was 172.5 MB in the beginning and 168.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-13 11:18:59,284 INFO L168 Benchmark]: RCFGBuilder took 1464.42 ms. Allocated memory was 206.0 MB in the beginning and 238.0 MB in the end (delta: 32.0 MB). Free memory was 168.4 MB in the beginning and 165.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-10-13 11:18:59,284 INFO L168 Benchmark]: TraceAbstraction took 160686.01 ms. Allocated memory was 238.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 165.4 MB in the beginning and 515.0 MB in the end (delta: -349.6 MB). Peak memory consumption was 680.7 MB. Max. memory is 7.1 GB. [2020-10-13 11:18:59,286 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.61 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 100.2 MB in the beginning and 172.5 MB in the end (delta: -72.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.72 ms. Allocated memory is still 206.0 MB. Free memory was 172.5 MB in the beginning and 168.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1464.42 ms. Allocated memory was 206.0 MB in the beginning and 238.0 MB in the end (delta: 32.0 MB). Free memory was 168.4 MB in the beginning and 165.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 160686.01 ms. Allocated memory was 238.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 165.4 MB in the beginning and 515.0 MB in the end (delta: -349.6 MB). Peak memory consumption was 680.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1625]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int FloppyThread ; [L41] int KernelMode ; [L42] int Suspended ; [L43] int Executive ; [L44] int DiskController ; [L45] int FloppyDiskPeripheral ; [L46] int FlConfigCallBack ; [L47] int MaximumInterfaceType ; [L48] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L49] int myStatus ; [L50] int s ; [L51] int UNLOADED ; [L52] int NP ; [L53] int DC ; [L54] int SKIP1 ; [L55] int SKIP2 ; [L56] int MPR1 ; [L57] int MPR3 ; [L58] int IPC ; [L59] int pended ; [L60] int compRegistered ; [L61] int lowerDriverReturn ; [L62] int setEventCalled ; [L63] int customIrp ; [L86] int PagingReferenceCount = 0; [L87] int PagingMutex = 0; [L666] int status ; [L667] int irp = __VERIFIER_nondet_int() ; [L668] int pirp ; [L669] int pirp__IoStatus__Status ; [L670] int irp_choice = __VERIFIER_nondet_int() ; [L671] int devobj = __VERIFIER_nondet_int() ; [L672] int __cil_tmp8 ; [L674] FloppyThread = 0 [L675] KernelMode = 0 [L676] Suspended = 0 [L677] Executive = 0 [L678] DiskController = 0 [L679] FloppyDiskPeripheral = 0 [L680] FlConfigCallBack = 0 [L681] MaximumInterfaceType = 0 [L682] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L683] myStatus = 0 [L684] s = 0 [L685] UNLOADED = 0 [L686] NP = 0 [L687] DC = 0 [L688] SKIP1 = 0 [L689] SKIP2 = 0 [L690] MPR1 = 0 [L691] MPR3 = 0 [L692] IPC = 0 [L693] pended = 0 [L694] compRegistered = 0 [L695] lowerDriverReturn = 0 [L696] setEventCalled = 0 [L697] customIrp = 0 [L701] status = 0 [L702] pirp = irp [L703] CALL _BLAST_init() [L69] UNLOADED = 0 [L70] NP = 1 [L71] DC = 2 [L72] SKIP1 = 3 [L73] SKIP2 = 4 [L74] MPR1 = 5 [L75] MPR3 = 6 [L76] IPC = 7 [L77] s = UNLOADED [L78] pended = 0 [L79] compRegistered = 0 [L80] lowerDriverReturn = 0 [L81] setEventCalled = 0 [L82] customIrp = 0 [L703] RET _BLAST_init() [L705] COND TRUE status >= 0 [L706] s = NP [L707] customIrp = 0 [L708] setEventCalled = customIrp [L709] lowerDriverReturn = setEventCalled [L710] compRegistered = lowerDriverReturn [L711] pended = compRegistered [L712] pirp__IoStatus__Status = 0 [L713] myStatus = 0 [L714] COND TRUE irp_choice == 0 [L715] pirp__IoStatus__Status = -1073741637 [L716] myStatus = -1073741637 [L719] CALL stub_driver_init() [L656] s = NP [L657] pended = 0 [L658] compRegistered = 0 [L659] lowerDriverReturn = 0 [L660] setEventCalled = 0 [L661] customIrp = 0 [L719] RET stub_driver_init() [L722] COND FALSE !(status < 0) [L726] int tmp_ndt_1; [L727] tmp_ndt_1 = __VERIFIER_nondet_int() [L728] COND FALSE !(tmp_ndt_1 == 0) [L731] int tmp_ndt_2; [L732] tmp_ndt_2 = __VERIFIER_nondet_int() [L733] COND FALSE !(tmp_ndt_2 == 1) [L736] int tmp_ndt_3; [L737] tmp_ndt_3 = __VERIFIER_nondet_int() [L738] COND FALSE !(tmp_ndt_3 == 2) [L741] int tmp_ndt_4; [L742] tmp_ndt_4 = __VERIFIER_nondet_int() [L743] COND TRUE tmp_ndt_4 == 3 [L765] CALL, EXPR FloppyPnp(devobj, pirp) [L159] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L160] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L161] int Irp__IoStatus__Information ; [L162] int Irp__IoStatus__Status ; [L163] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L164] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L165] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L166] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L167] int disketteExtension__HoldNewRequests ; [L168] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L169] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L170] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L171] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L172] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L173] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L174] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L175] int irpSp ; [L176] int disketteExtension ; [L177] int ntStatus ; [L178] int doneEvent = __VERIFIER_nondet_int() ; [L179] int irpSp___0 ; [L180] int nextIrpSp ; [L181] int nextIrpSp__Control ; [L182] int irpSp___1 ; [L183] int irpSp__Context ; [L184] int irpSp__Control ; [L185] long __cil_tmp29 ; [L186] long __cil_tmp30 ; [L189] ntStatus = 0 [L190] PagingReferenceCount ++ [L191] COND TRUE PagingReferenceCount == 1 [L194] disketteExtension = DeviceObject__DeviceExtension [L195] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L196] COND FALSE !(\read(disketteExtension__IsRemoved)) [L205] COND FALSE !(irpSp__MinorFunction == 0) [L208] COND TRUE irpSp__MinorFunction == 5 [L234] COND TRUE irpSp__MinorFunction == 5 [L237] COND FALSE !(! disketteExtension__IsStarted) [L253] disketteExtension__HoldNewRequests = 1 [L254] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L96] int status ; [L97] int threadHandle = __VERIFIER_nondet_int() ; [L98] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L99] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L100] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L101] int Irp__IoStatus__Status ; [L102] int Irp__IoStatus__Information ; [L103] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L104] int ObjAttributes = __VERIFIER_nondet_int() ; [L105] int __cil_tmp12 ; [L106] int __cil_tmp13 ; [L109] COND FALSE !(DisketteExtension__PoweringDown == 1) [L115] DisketteExtension__ThreadReferenceCount ++ [L116] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L148] COND TRUE pended == 0 [L149] pended = 1 [L155] return (259); [L254] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L254] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L257] __cil_tmp29 = (long )ntStatus [L258] COND TRUE __cil_tmp29 == 259L [L260-L261] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1064] COND FALSE !(s == MPR3) [L1073] COND FALSE !(customIrp == 1) [L1077] COND FALSE !(s == MPR3) [L1084] int tmp_ndt_12; [L1085] tmp_ndt_12 = __VERIFIER_nondet_int() [L1086] COND FALSE !(tmp_ndt_12 == 0) [L1094] return (-1073741823); [L260-L261] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L263] COND FALSE !(disketteExtension__FloppyThread != 0) [L266] disketteExtension__FloppyThread = 0 [L267] Irp__IoStatus__Status = 0 [L268] myStatus = 0 [L269] COND TRUE s == NP [L270] s = SKIP1 [L277] Irp__CurrentLocation ++ [L278] Irp__Tail__Overlay__CurrentStackLocation ++ [L279] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L966] int returnVal2 ; [L967] int compRetStatus1 ; [L968] int lcontext = __VERIFIER_nondet_int() ; [L969] unsigned long __cil_tmp7 ; [L972] COND FALSE !(\read(compRegistered)) [L985] int tmp_ndt_10; [L986] tmp_ndt_10 = __VERIFIER_nondet_int() [L987] COND TRUE tmp_ndt_10 == 0 [L998] returnVal2 = 0 [L1011] COND FALSE !(s == NP) [L1015] COND FALSE !(s == MPR1) [L1024] COND TRUE s == SKIP1 [L1025] s = SKIP2 [L1026] lowerDriverReturn = returnVal2 [L1034] return (returnVal2); [L279] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L279] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L425] PagingReferenceCount -- [L426] COND TRUE PagingReferenceCount == 0 [L429] return (ntStatus); [L765] RET, EXPR FloppyPnp(devobj, pirp) [L765] status = FloppyPnp(devobj, pirp) [L778] COND TRUE pended == 1 [L779] COND FALSE !(s == NP) [L786] COND TRUE pended == 1 [L787] COND FALSE !(s == MPR3) [L794] COND TRUE s != UNLOADED [L795] COND TRUE status != -1 [L796] COND FALSE !(s != SKIP2) [L810] COND TRUE pended == 1 [L811] COND TRUE status != 259 [L812] CALL errorFn() [L1625] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 393 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 160.5s, OverallIterations: 54, TraceHistogramMax: 1, AutomataDifference: 105.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23025 SDtfs, 27700 SDslu, 42635 SDs, 0 SdLazy, 79832 SolverSat, 8109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 455 SyntacticMatches, 3 SemanticMatches, 647 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1261occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 53 MinimizatonAttempts, 4388 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 48.5s InterpolantComputationTime, 2895 NumberOfCodeBlocks, 2895 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 2757 ConstructedInterpolants, 0 QuantifiedInterpolants, 724881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 53 InterpolantComputations, 53 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...