/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:31:11,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:31:11,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:31:11,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:31:11,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:31:11,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:31:11,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:31:11,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:31:11,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:31:11,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:31:11,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:31:11,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:31:11,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:31:11,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:31:11,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:31:11,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:31:11,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:31:11,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:31:11,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:31:11,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:31:11,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:31:11,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:31:11,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:31:11,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:31:12,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:31:12,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:31:12,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:31:12,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:31:12,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:31:12,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:31:12,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:31:12,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:31:12,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:31:12,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:31:12,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:31:12,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:31:12,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:31:12,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:31:12,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:31:12,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:31:12,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:31:12,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 16:31:12,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:31:12,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:31:12,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:31:12,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:31:12,059 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:31:12,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:31:12,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:31:12,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:31:12,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:31:12,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:31:12,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:31:12,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:31:12,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:31:12,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:31:12,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:31:12,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:31:12,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:31:12,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:31:12,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:31:12,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:31:12,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:31:12,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:31:12,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:31:12,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:31:12,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:31:12,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:31:12,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:31:12,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:31:12,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:31:12,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:31:12,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:31:12,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:31:12,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:31:12,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:31:12,358 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:31:12,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-12 16:31:12,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229264fa7/c9164e327c544461a070695d4463b6a7/FLAGab3132708 [2020-10-12 16:31:13,042 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:31:13,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-12 16:31:13,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229264fa7/c9164e327c544461a070695d4463b6a7/FLAGab3132708 [2020-10-12 16:31:13,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229264fa7/c9164e327c544461a070695d4463b6a7 [2020-10-12 16:31:13,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:31:13,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:31:13,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:31:13,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:31:13,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:31:13,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:13,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71adb4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13, skipping insertion in model container [2020-10-12 16:31:13,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:13,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:31:13,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:31:13,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:31:13,711 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:31:13,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:31:13,946 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:31:13,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13 WrapperNode [2020-10-12 16:31:13,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:31:13,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:31:13,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:31:13,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:31:13,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:13,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:13,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:13,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:14,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:14,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:14,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... [2020-10-12 16:31:14,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:31:14,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:31:14,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:31:14,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:31:14,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:31:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:31:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:31:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-12 16:31:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-12 16:31:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-12 16:31:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-12 16:31:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2020-10-12 16:31:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2020-10-12 16:31:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2020-10-12 16:31:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2020-10-12 16:31:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-12 16:31:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-12 16:31:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-12 16:31:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-12 16:31:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-12 16:31:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-12 16:31:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-12 16:31:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-12 16:31:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-12 16:31:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-12 16:31:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-12 16:31:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-12 16:31:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-12 16:31:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2020-10-12 16:31:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-12 16:31:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-12 16:31:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:31:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-12 16:31:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:31:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:31:14,432 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:14,499 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:14,499 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:14,511 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:14,525 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:14,525 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:14,533 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:14,769 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-12 16:31:14,769 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-12 16:31:14,772 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:14,855 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-10-12 16:31:14,856 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-10-12 16:31:14,871 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:14,890 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-12 16:31:14,890 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-12 16:31:14,978 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:14,988 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:14,989 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:14,989 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,018 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:15,020 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:15,021 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,030 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:15,031 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:15,073 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,104 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-12 16:31:15,105 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-12 16:31:15,108 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,229 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2020-10-12 16:31:15,229 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2020-10-12 16:31:15,278 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,285 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:15,285 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:15,286 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,294 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:15,294 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:15,295 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:31:15,301 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:31:15,302 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:31:15,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:31:15,326 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:31:15,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:31:15 BoogieIcfgContainer [2020-10-12 16:31:15,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:31:15,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:31:15,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:31:15,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:31:15,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:31:13" (1/3) ... [2020-10-12 16:31:15,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a82e6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:31:15, skipping insertion in model container [2020-10-12 16:31:15,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:31:13" (2/3) ... [2020-10-12 16:31:15,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a82e6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:31:15, skipping insertion in model container [2020-10-12 16:31:15,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:31:15" (3/3) ... [2020-10-12 16:31:15,342 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2020-10-12 16:31:15,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:31:15,363 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:31:15,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:31:15,409 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:31:15,410 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:31:15,410 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:31:15,410 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:31:15,410 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:31:15,410 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:31:15,410 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:31:15,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:31:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2020-10-12 16:31:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:31:15,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:15,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:15,446 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1980583479, now seen corresponding path program 1 times [2020-10-12 16:31:15,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:15,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727002557] [2020-10-12 16:31:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:31:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:31:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-12 16:31:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:31:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:31:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:16,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 16:31:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:16,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 16:31:16,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:17,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727002557] [2020-10-12 16:31:17,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:17,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:31:17,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075277388] [2020-10-12 16:31:17,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:31:17,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:17,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:31:17,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:31:17,049 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 5 states. [2020-10-12 16:31:19,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:19,048 INFO L93 Difference]: Finished difference Result 776 states and 1133 transitions. [2020-10-12 16:31:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:31:19,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:31:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:19,093 INFO L225 Difference]: With dead ends: 776 [2020-10-12 16:31:19,094 INFO L226 Difference]: Without dead ends: 528 [2020-10-12 16:31:19,125 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 [2020-10-12 16:31:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-12 16:31:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 466. [2020-10-12 16:31:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-12 16:31:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 636 transitions. [2020-10-12 16:31:19,262 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 636 transitions. Word has length 20 [2020-10-12 16:31:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:19,263 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 636 transitions. [2020-10-12 16:31:19,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:31:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 636 transitions. [2020-10-12 16:31:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:31:19,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:19,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:19,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:31:19,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:19,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1966238570, now seen corresponding path program 1 times [2020-10-12 16:31:19,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:19,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347903317] [2020-10-12 16:31:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:31:19,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 16:31:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:31:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:31:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:19,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:19,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:31:19,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:19,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347903317] [2020-10-12 16:31:19,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:19,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:31:19,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782951737] [2020-10-12 16:31:19,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:31:19,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:31:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:31:19,613 INFO L87 Difference]: Start difference. First operand 466 states and 636 transitions. Second operand 5 states. [2020-10-12 16:31:21,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:21,249 INFO L93 Difference]: Finished difference Result 530 states and 724 transitions. [2020-10-12 16:31:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:31:21,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:31:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:21,260 INFO L225 Difference]: With dead ends: 530 [2020-10-12 16:31:21,260 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 16:31:21,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:31:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 16:31:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 466. [2020-10-12 16:31:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-12 16:31:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 635 transitions. [2020-10-12 16:31:21,349 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 635 transitions. Word has length 20 [2020-10-12 16:31:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:21,349 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 635 transitions. [2020-10-12 16:31:21,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:31:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 635 transitions. [2020-10-12 16:31:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 16:31:21,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:21,351 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] [2020-10-12 16:31:21,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:31:21,351 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1877533292, now seen corresponding path program 1 times [2020-10-12 16:31:21,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:21,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221071734] [2020-10-12 16:31:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:21,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 16:31:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 16:31:21,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:31:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:31:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:21,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:21,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:21,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:21,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:21,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:21,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:21,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221071734] [2020-10-12 16:31:21,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:21,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:31:21,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702472783] [2020-10-12 16:31:21,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:31:21,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:21,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:31:21,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:31:21,774 INFO L87 Difference]: Start difference. First operand 466 states and 635 transitions. Second operand 6 states. [2020-10-12 16:31:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:24,184 INFO L93 Difference]: Finished difference Result 866 states and 1175 transitions. [2020-10-12 16:31:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:31:24,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-12 16:31:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:24,191 INFO L225 Difference]: With dead ends: 866 [2020-10-12 16:31:24,191 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 16:31:24,193 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 [2020-10-12 16:31:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 16:31:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 593. [2020-10-12 16:31:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-12 16:31:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 806 transitions. [2020-10-12 16:31:24,246 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 806 transitions. Word has length 25 [2020-10-12 16:31:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:24,246 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 806 transitions. [2020-10-12 16:31:24,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:31:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 806 transitions. [2020-10-12 16:31:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 16:31:24,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:24,249 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] [2020-10-12 16:31:24,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:31:24,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:24,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2127650726, now seen corresponding path program 1 times [2020-10-12 16:31:24,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:24,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560606410] [2020-10-12 16:31:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 16:31:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-12 16:31:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 16:31:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:31:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 16:31:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:31:25,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:25,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:25,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:25,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 16:31:25,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:25,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:25,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:25,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:31:25,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:25,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:25,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:25,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:25,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:25,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560606410] [2020-10-12 16:31:25,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:25,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:31:25,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404632746] [2020-10-12 16:31:25,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:31:25,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:25,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:31:25,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:31:25,666 INFO L87 Difference]: Start difference. First operand 593 states and 806 transitions. Second operand 7 states. [2020-10-12 16:31:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:28,820 INFO L93 Difference]: Finished difference Result 1542 states and 2049 transitions. [2020-10-12 16:31:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:31:28,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-12 16:31:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:28,830 INFO L225 Difference]: With dead ends: 1542 [2020-10-12 16:31:28,831 INFO L226 Difference]: Without dead ends: 1036 [2020-10-12 16:31:28,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:31:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-10-12 16:31:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 826. [2020-10-12 16:31:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-12 16:31:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1095 transitions. [2020-10-12 16:31:28,930 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1095 transitions. Word has length 31 [2020-10-12 16:31:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:28,931 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 1095 transitions. [2020-10-12 16:31:28,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:31:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1095 transitions. [2020-10-12 16:31:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 16:31:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:28,936 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] [2020-10-12 16:31:28,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:31:28,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2129497768, now seen corresponding path program 1 times [2020-10-12 16:31:28,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:28,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479711131] [2020-10-12 16:31:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 16:31:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 16:31:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:31:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 16:31:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:29,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:29,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:29,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:29,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:29,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:29,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:29,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479711131] [2020-10-12 16:31:29,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:29,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:31:29,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896012280] [2020-10-12 16:31:29,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:31:29,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:29,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:31:29,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:31:29,456 INFO L87 Difference]: Start difference. First operand 826 states and 1095 transitions. Second operand 6 states. [2020-10-12 16:31:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:31,321 INFO L93 Difference]: Finished difference Result 943 states and 1252 transitions. [2020-10-12 16:31:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:31:31,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-12 16:31:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:31,329 INFO L225 Difference]: With dead ends: 943 [2020-10-12 16:31:31,329 INFO L226 Difference]: Without dead ends: 939 [2020-10-12 16:31:31,330 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 [2020-10-12 16:31:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-10-12 16:31:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 824. [2020-10-12 16:31:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-10-12 16:31:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1089 transitions. [2020-10-12 16:31:31,423 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1089 transitions. Word has length 31 [2020-10-12 16:31:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:31,424 INFO L479 AbstractCegarLoop]: Abstraction has 824 states and 1089 transitions. [2020-10-12 16:31:31,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:31:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1089 transitions. [2020-10-12 16:31:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 16:31:31,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:31,431 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] [2020-10-12 16:31:31,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:31:31,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash -591734042, now seen corresponding path program 1 times [2020-10-12 16:31:31,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:31,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302871635] [2020-10-12 16:31:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:31,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:31,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 16:31:31,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-12 16:31:31,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:31:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:31:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:31,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:31,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:31,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:31,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:31,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:31,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:31,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:31,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302871635] [2020-10-12 16:31:31,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:31,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:31:31,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016616472] [2020-10-12 16:31:31,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:31:31,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:31,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:31:31,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:31:31,927 INFO L87 Difference]: Start difference. First operand 824 states and 1089 transitions. Second operand 6 states. [2020-10-12 16:31:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:33,753 INFO L93 Difference]: Finished difference Result 1443 states and 1909 transitions. [2020-10-12 16:31:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:31:33,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-12 16:31:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:33,761 INFO L225 Difference]: With dead ends: 1443 [2020-10-12 16:31:33,761 INFO L226 Difference]: Without dead ends: 1041 [2020-10-12 16:31:33,763 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 [2020-10-12 16:31:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-12 16:31:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 967. [2020-10-12 16:31:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-10-12 16:31:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1292 transitions. [2020-10-12 16:31:33,843 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1292 transitions. Word has length 33 [2020-10-12 16:31:33,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:33,844 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1292 transitions. [2020-10-12 16:31:33,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:31:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1292 transitions. [2020-10-12 16:31:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 16:31:33,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:33,845 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] [2020-10-12 16:31:33,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:31:33,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1251517402, now seen corresponding path program 1 times [2020-10-12 16:31:33,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:33,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151811210] [2020-10-12 16:31:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:33,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 16:31:33,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 16:31:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 16:31:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:31:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:34,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:34,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:34,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:34,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:31:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:34,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151811210] [2020-10-12 16:31:34,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:34,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:31:34,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552702355] [2020-10-12 16:31:34,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:31:34,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:34,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:31:34,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:31:34,135 INFO L87 Difference]: Start difference. First operand 967 states and 1292 transitions. Second operand 8 states. [2020-10-12 16:31:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:35,594 INFO L93 Difference]: Finished difference Result 1105 states and 1461 transitions. [2020-10-12 16:31:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:31:35,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-12 16:31:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:35,601 INFO L225 Difference]: With dead ends: 1105 [2020-10-12 16:31:35,602 INFO L226 Difference]: Without dead ends: 1100 [2020-10-12 16:31:35,603 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 [2020-10-12 16:31:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-12 16:31:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1018. [2020-10-12 16:31:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-12 16:31:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1352 transitions. [2020-10-12 16:31:35,687 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1352 transitions. Word has length 38 [2020-10-12 16:31:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:35,687 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1352 transitions. [2020-10-12 16:31:35,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1352 transitions. [2020-10-12 16:31:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 16:31:35,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:35,690 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] [2020-10-12 16:31:35,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:31:35,690 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:35,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:35,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1679216250, now seen corresponding path program 1 times [2020-10-12 16:31:35,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:35,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144027514] [2020-10-12 16:31:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 16:31:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 16:31:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 16:31:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:31:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:36,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:36,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:36,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:36,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:36,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:36,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:36,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:36,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:36,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:36,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:36,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144027514] [2020-10-12 16:31:36,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:36,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:31:36,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478380951] [2020-10-12 16:31:36,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:31:36,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:36,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:31:36,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:31:36,087 INFO L87 Difference]: Start difference. First operand 1018 states and 1352 transitions. Second operand 6 states. [2020-10-12 16:31:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:37,772 INFO L93 Difference]: Finished difference Result 1078 states and 1425 transitions. [2020-10-12 16:31:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:31:37,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-12 16:31:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:37,778 INFO L225 Difference]: With dead ends: 1078 [2020-10-12 16:31:37,779 INFO L226 Difference]: Without dead ends: 1075 [2020-10-12 16:31:37,780 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 [2020-10-12 16:31:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2020-10-12 16:31:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1029. [2020-10-12 16:31:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-12 16:31:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2020-10-12 16:31:37,854 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 38 [2020-10-12 16:31:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:37,855 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2020-10-12 16:31:37,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:31:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2020-10-12 16:31:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 16:31:37,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:37,856 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] [2020-10-12 16:31:37,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:31:37,857 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:37,857 INFO L82 PathProgramCache]: Analyzing trace with hash 310268416, now seen corresponding path program 1 times [2020-10-12 16:31:37,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:37,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388828032] [2020-10-12 16:31:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 16:31:38,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-12 16:31:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 16:31:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:38,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:38,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:38,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:38,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:38,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:38,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 16:31:38,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:38,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388828032] [2020-10-12 16:31:38,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:38,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:31:38,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674948905] [2020-10-12 16:31:38,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:31:38,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:38,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:31:38,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:38,512 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 transitions. Second operand 10 states. [2020-10-12 16:31:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:40,766 INFO L93 Difference]: Finished difference Result 1120 states and 1476 transitions. [2020-10-12 16:31:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:31:40,766 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-12 16:31:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:40,774 INFO L225 Difference]: With dead ends: 1120 [2020-10-12 16:31:40,774 INFO L226 Difference]: Without dead ends: 1105 [2020-10-12 16:31:40,775 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 [2020-10-12 16:31:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-10-12 16:31:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1027. [2020-10-12 16:31:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-12 16:31:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1359 transitions. [2020-10-12 16:31:40,852 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1359 transitions. Word has length 39 [2020-10-12 16:31:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:40,853 INFO L479 AbstractCegarLoop]: Abstraction has 1027 states and 1359 transitions. [2020-10-12 16:31:40,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:31:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1359 transitions. [2020-10-12 16:31:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 16:31:40,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:40,855 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] [2020-10-12 16:31:40,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:31:40,855 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:40,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1380961955, now seen corresponding path program 1 times [2020-10-12 16:31:40,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:40,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339583971] [2020-10-12 16:31:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 16:31:41,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-12 16:31:41,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 16:31:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:41,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 16:31:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:41,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:41,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:41,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:41,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339583971] [2020-10-12 16:31:41,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:41,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:31:41,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119135584] [2020-10-12 16:31:41,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:31:41,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:41,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:31:41,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:41,412 INFO L87 Difference]: Start difference. First operand 1027 states and 1359 transitions. Second operand 10 states. [2020-10-12 16:31:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:43,642 INFO L93 Difference]: Finished difference Result 1118 states and 1472 transitions. [2020-10-12 16:31:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:31:43,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-12 16:31:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:43,649 INFO L225 Difference]: With dead ends: 1118 [2020-10-12 16:31:43,649 INFO L226 Difference]: Without dead ends: 1098 [2020-10-12 16:31:43,650 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 [2020-10-12 16:31:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-12 16:31:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1020. [2020-10-12 16:31:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-10-12 16:31:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1350 transitions. [2020-10-12 16:31:43,733 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1350 transitions. Word has length 40 [2020-10-12 16:31:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:43,733 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1350 transitions. [2020-10-12 16:31:43,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:31:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1350 transitions. [2020-10-12 16:31:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 16:31:43,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:43,735 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] [2020-10-12 16:31:43,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:31:43,736 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1663847294, now seen corresponding path program 1 times [2020-10-12 16:31:43,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:43,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043542722] [2020-10-12 16:31:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 16:31:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-12 16:31:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 16:31:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:44,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:44,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:44,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:44,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:44,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:44,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:44,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:44,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:44,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 16:31:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:44,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:44,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:44,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:44,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043542722] [2020-10-12 16:31:44,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:44,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 16:31:44,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371910323] [2020-10-12 16:31:44,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:31:44,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:31:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:31:44,719 INFO L87 Difference]: Start difference. First operand 1020 states and 1350 transitions. Second operand 9 states. [2020-10-12 16:31:44,982 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 16:31:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:48,216 INFO L93 Difference]: Finished difference Result 1895 states and 2497 transitions. [2020-10-12 16:31:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:31:48,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 16:31:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:48,228 INFO L225 Difference]: With dead ends: 1895 [2020-10-12 16:31:48,228 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 16:31:48,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:31:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 16:31:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1076. [2020-10-12 16:31:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 16:31:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1411 transitions. [2020-10-12 16:31:48,330 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1411 transitions. Word has length 44 [2020-10-12 16:31:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:48,331 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1411 transitions. [2020-10-12 16:31:48,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:31:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1411 transitions. [2020-10-12 16:31:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 16:31:48,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:48,333 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] [2020-10-12 16:31:48,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:31:48,333 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1407580827, now seen corresponding path program 1 times [2020-10-12 16:31:48,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:48,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992398425] [2020-10-12 16:31:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 16:31:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-12 16:31:48,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 16:31:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:49,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:49,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:49,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:49,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:49,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:49,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:49,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:31:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:49,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:49,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:31:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 16:31:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:31:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 16:31:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:49,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:49,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:49,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:49,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:49,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:49,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:49,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:49,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:49,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:49,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992398425] [2020-10-12 16:31:49,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:49,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:31:49,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898266926] [2020-10-12 16:31:49,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:31:49,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:31:49,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:49,292 INFO L87 Difference]: Start difference. First operand 1076 states and 1411 transitions. Second operand 10 states. [2020-10-12 16:31:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:50,833 INFO L93 Difference]: Finished difference Result 1156 states and 1508 transitions. [2020-10-12 16:31:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:31:50,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-12 16:31:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:50,839 INFO L225 Difference]: With dead ends: 1156 [2020-10-12 16:31:50,839 INFO L226 Difference]: Without dead ends: 1138 [2020-10-12 16:31:50,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-10-12 16:31:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1074. [2020-10-12 16:31:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-12 16:31:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1407 transitions. [2020-10-12 16:31:50,935 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1407 transitions. Word has length 43 [2020-10-12 16:31:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:50,936 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1407 transitions. [2020-10-12 16:31:50,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:31:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1407 transitions. [2020-10-12 16:31:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 16:31:50,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:50,938 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] [2020-10-12 16:31:50,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 16:31:50,938 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash -319659871, now seen corresponding path program 1 times [2020-10-12 16:31:50,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:50,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412509714] [2020-10-12 16:31:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:51,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 16:31:51,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 16:31:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 16:31:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:51,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:51,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:51,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:51,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:51,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:51,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:51,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:31:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:51,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:51,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 16:31:51,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 16:31:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:51,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412509714] [2020-10-12 16:31:51,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:51,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:31:51,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363608184] [2020-10-12 16:31:51,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:31:51,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:51,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:31:51,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:31:51,388 INFO L87 Difference]: Start difference. First operand 1074 states and 1407 transitions. Second operand 8 states. [2020-10-12 16:31:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:53,484 INFO L93 Difference]: Finished difference Result 1147 states and 1493 transitions. [2020-10-12 16:31:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:31:53,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-12 16:31:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:53,493 INFO L225 Difference]: With dead ends: 1147 [2020-10-12 16:31:53,493 INFO L226 Difference]: Without dead ends: 1125 [2020-10-12 16:31:53,503 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 [2020-10-12 16:31:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-10-12 16:31:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1076. [2020-10-12 16:31:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 16:31:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1409 transitions. [2020-10-12 16:31:53,659 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1409 transitions. Word has length 42 [2020-10-12 16:31:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:53,659 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1409 transitions. [2020-10-12 16:31:53,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1409 transitions. [2020-10-12 16:31:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 16:31:53,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:53,662 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] [2020-10-12 16:31:53,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 16:31:53,663 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:53,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:53,663 INFO L82 PathProgramCache]: Analyzing trace with hash 811573839, now seen corresponding path program 1 times [2020-10-12 16:31:53,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:53,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804619626] [2020-10-12 16:31:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:53,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 16:31:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 16:31:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 16:31:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:53,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:53,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:53,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:54,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:54,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:31:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:54,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 16:31:54,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 16:31:54,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 16:31:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:54,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804619626] [2020-10-12 16:31:54,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:54,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:31:54,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040477341] [2020-10-12 16:31:54,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:31:54,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:54,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:31:54,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:31:54,257 INFO L87 Difference]: Start difference. First operand 1076 states and 1409 transitions. Second operand 8 states. [2020-10-12 16:31:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:57,114 INFO L93 Difference]: Finished difference Result 1149 states and 1495 transitions. [2020-10-12 16:31:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:31:57,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-12 16:31:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:57,123 INFO L225 Difference]: With dead ends: 1149 [2020-10-12 16:31:57,123 INFO L226 Difference]: Without dead ends: 1127 [2020-10-12 16:31:57,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:31:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-12 16:31:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1076. [2020-10-12 16:31:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 16:31:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1409 transitions. [2020-10-12 16:31:57,279 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1409 transitions. Word has length 43 [2020-10-12 16:31:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:57,281 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1409 transitions. [2020-10-12 16:31:57,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1409 transitions. [2020-10-12 16:31:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 16:31:57,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:57,284 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] [2020-10-12 16:31:57,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 16:31:57,285 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:57,285 INFO L82 PathProgramCache]: Analyzing trace with hash -209494515, now seen corresponding path program 1 times [2020-10-12 16:31:57,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:57,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963194523] [2020-10-12 16:31:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 16:31:57,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 16:31:57,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 16:31:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:57,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:57,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:57,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:57,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:57,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:57,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:57,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:31:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 16:31:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 16:31:57,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 16:31:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:31:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:57,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963194523] [2020-10-12 16:31:57,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:57,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:31:57,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727815244] [2020-10-12 16:31:57,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:31:57,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:57,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:31:57,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:31:57,836 INFO L87 Difference]: Start difference. First operand 1076 states and 1409 transitions. Second operand 8 states. [2020-10-12 16:31:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:59,858 INFO L93 Difference]: Finished difference Result 1149 states and 1495 transitions. [2020-10-12 16:31:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:31:59,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-12 16:31:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:59,864 INFO L225 Difference]: With dead ends: 1149 [2020-10-12 16:31:59,864 INFO L226 Difference]: Without dead ends: 1127 [2020-10-12 16:31:59,865 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 [2020-10-12 16:31:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-12 16:31:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1076. [2020-10-12 16:31:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 16:31:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1409 transitions. [2020-10-12 16:31:59,959 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1409 transitions. Word has length 43 [2020-10-12 16:31:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:59,959 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1409 transitions. [2020-10-12 16:31:59,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1409 transitions. [2020-10-12 16:31:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 16:31:59,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:59,961 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] [2020-10-12 16:31:59,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 16:31:59,962 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash 968760816, now seen corresponding path program 1 times [2020-10-12 16:31:59,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:59,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562547232] [2020-10-12 16:31:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:00,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 16:32:00,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:32:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-12 16:32:00,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 16:32:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:32:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:00,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:00,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:00,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:00,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:00,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:00,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:00,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:32:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:00,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 16:32:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 16:32:00,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:32:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 16:32:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:00,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:32:00,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:00,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:00,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562547232] [2020-10-12 16:32:00,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:00,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:32:00,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871302967] [2020-10-12 16:32:00,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:32:00,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:00,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:32:00,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:32:00,565 INFO L87 Difference]: Start difference. First operand 1076 states and 1409 transitions. Second operand 10 states. [2020-10-12 16:32:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:02,578 INFO L93 Difference]: Finished difference Result 1156 states and 1506 transitions. [2020-10-12 16:32:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:32:02,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-12 16:32:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:02,587 INFO L225 Difference]: With dead ends: 1156 [2020-10-12 16:32:02,588 INFO L226 Difference]: Without dead ends: 1138 [2020-10-12 16:32:02,588 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 [2020-10-12 16:32:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-10-12 16:32:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1074. [2020-10-12 16:32:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-12 16:32:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1405 transitions. [2020-10-12 16:32:02,676 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1405 transitions. Word has length 45 [2020-10-12 16:32:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:02,677 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1405 transitions. [2020-10-12 16:32:02,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:32:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1405 transitions. [2020-10-12 16:32:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 16:32:02,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:02,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:32:02,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 16:32:02,679 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:02,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1421115394, now seen corresponding path program 1 times [2020-10-12 16:32:02,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:02,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835471612] [2020-10-12 16:32:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:04,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:04,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 16:32:04,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:32:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2245 [2020-10-12 16:32:04,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:32:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:04,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 16:32:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:05,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:05,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:05,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:05,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:05,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:05,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:05,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:05,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:05,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:05,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:05,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:05,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:05,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:05,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:32:05,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 16:32:05,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:32:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:32:05,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 16:32:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:05,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:05,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 16:32:05,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 16:32:05,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:32:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:32:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:05,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835471612] [2020-10-12 16:32:05,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:05,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:32:05,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406178432] [2020-10-12 16:32:05,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:32:05,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:05,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:32:05,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:32:05,280 INFO L87 Difference]: Start difference. First operand 1074 states and 1405 transitions. Second operand 12 states. [2020-10-12 16:32:05,546 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-12 16:32:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:08,367 INFO L93 Difference]: Finished difference Result 1293 states and 1696 transitions. [2020-10-12 16:32:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:32:08,368 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-12 16:32:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:08,373 INFO L225 Difference]: With dead ends: 1293 [2020-10-12 16:32:08,374 INFO L226 Difference]: Without dead ends: 1282 [2020-10-12 16:32:08,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-12 16:32:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2020-10-12 16:32:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1125. [2020-10-12 16:32:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-12 16:32:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1459 transitions. [2020-10-12 16:32:08,486 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1459 transitions. Word has length 46 [2020-10-12 16:32:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:08,487 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1459 transitions. [2020-10-12 16:32:08,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:32:08,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1459 transitions. [2020-10-12 16:32:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 16:32:08,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:08,489 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] [2020-10-12 16:32:08,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 16:32:08,489 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1435460303, now seen corresponding path program 1 times [2020-10-12 16:32:08,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:08,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617052008] [2020-10-12 16:32:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:08,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 16:32:08,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:32:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 16:32:08,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 16:32:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:32:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:08,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:08,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:08,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:08,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:08,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:08,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:08,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:08,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:08,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:08,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:08,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:08,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:32:08,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 16:32:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:32:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:08,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 16:32:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:08,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:08,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:08,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 16:32:08,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:32:08,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:08,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:08,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617052008] [2020-10-12 16:32:08,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:08,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:32:08,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806840836] [2020-10-12 16:32:08,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:32:08,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:32:08,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:32:08,946 INFO L87 Difference]: Start difference. First operand 1125 states and 1459 transitions. Second operand 8 states. [2020-10-12 16:32:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:11,016 INFO L93 Difference]: Finished difference Result 1225 states and 1587 transitions. [2020-10-12 16:32:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:32:11,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-12 16:32:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:11,022 INFO L225 Difference]: With dead ends: 1225 [2020-10-12 16:32:11,023 INFO L226 Difference]: Without dead ends: 1166 [2020-10-12 16:32:11,024 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 [2020-10-12 16:32:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-10-12 16:32:11,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1092. [2020-10-12 16:32:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1092 states. [2020-10-12 16:32:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1413 transitions. [2020-10-12 16:32:11,118 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1413 transitions. Word has length 46 [2020-10-12 16:32:11,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:11,118 INFO L479 AbstractCegarLoop]: Abstraction has 1092 states and 1413 transitions. [2020-10-12 16:32:11,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:32:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1413 transitions. [2020-10-12 16:32:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 16:32:11,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:11,120 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] [2020-10-12 16:32:11,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 16:32:11,121 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:11,121 INFO L82 PathProgramCache]: Analyzing trace with hash -21043436, now seen corresponding path program 1 times [2020-10-12 16:32:11,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:11,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038444194] [2020-10-12 16:32:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 16:32:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:32:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-12 16:32:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 16:32:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 16:32:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:12,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:12,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:12,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:12,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:12,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:12,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:12,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:12,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:12,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:12,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:32:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:32:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 16:32:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:32:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:32:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:12,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:12,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:32:12,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:12,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:32:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:12,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038444194] [2020-10-12 16:32:12,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:12,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:32:12,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071675880] [2020-10-12 16:32:12,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:32:12,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:12,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:32:12,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:32:12,489 INFO L87 Difference]: Start difference. First operand 1092 states and 1413 transitions. Second operand 12 states. [2020-10-12 16:32:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:14,840 INFO L93 Difference]: Finished difference Result 1210 states and 1559 transitions. [2020-10-12 16:32:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:32:14,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-12 16:32:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:14,846 INFO L225 Difference]: With dead ends: 1210 [2020-10-12 16:32:14,847 INFO L226 Difference]: Without dead ends: 1183 [2020-10-12 16:32:14,848 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 [2020-10-12 16:32:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-10-12 16:32:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1088. [2020-10-12 16:32:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-10-12 16:32:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1391 transitions. [2020-10-12 16:32:14,939 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1391 transitions. Word has length 48 [2020-10-12 16:32:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:14,939 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 1391 transitions. [2020-10-12 16:32:14,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:32:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1391 transitions. [2020-10-12 16:32:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 16:32:14,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:14,941 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] [2020-10-12 16:32:14,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 16:32:14,942 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1425041063, now seen corresponding path program 1 times [2020-10-12 16:32:14,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:14,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414219076] [2020-10-12 16:32:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:16,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:16,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 16:32:16,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:32:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-12 16:32:16,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 16:32:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:16,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:16,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:16,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:16,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:16,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:16,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:16,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:16,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:16,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:16,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:16,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:16,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:32:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:16,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:32:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:32:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:32:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:16,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414219076] [2020-10-12 16:32:16,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:16,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:32:16,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230495642] [2020-10-12 16:32:16,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:32:16,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:16,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:32:16,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:32:16,786 INFO L87 Difference]: Start difference. First operand 1088 states and 1391 transitions. Second operand 10 states. [2020-10-12 16:32:18,257 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-12 16:32:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:19,922 INFO L93 Difference]: Finished difference Result 1992 states and 2606 transitions. [2020-10-12 16:32:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:32:19,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-12 16:32:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:19,929 INFO L225 Difference]: With dead ends: 1992 [2020-10-12 16:32:19,929 INFO L226 Difference]: Without dead ends: 1474 [2020-10-12 16:32:19,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:32:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2020-10-12 16:32:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1243. [2020-10-12 16:32:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-10-12 16:32:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1597 transitions. [2020-10-12 16:32:20,044 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1597 transitions. Word has length 52 [2020-10-12 16:32:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:20,045 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1597 transitions. [2020-10-12 16:32:20,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:32:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1597 transitions. [2020-10-12 16:32:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 16:32:20,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:20,047 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] [2020-10-12 16:32:20,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 16:32:20,048 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:20,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1090292134, now seen corresponding path program 1 times [2020-10-12 16:32:20,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:20,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158891147] [2020-10-12 16:32:20,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:20,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:20,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 16:32:20,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:20,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 16:32:20,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 16:32:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:32:20,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:20,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:20,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:20,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:20,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:20,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:20,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:20,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:20,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:20,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:20,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:20,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:20,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:20,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:20,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:32:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 16:32:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:32:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 16:32:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:20,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:20,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:32:20,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:32:20,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:20,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158891147] [2020-10-12 16:32:20,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:20,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 16:32:20,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032634504] [2020-10-12 16:32:20,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:32:20,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:20,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:32:20,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:32:20,567 INFO L87 Difference]: Start difference. First operand 1243 states and 1597 transitions. Second operand 11 states. [2020-10-12 16:32:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:22,807 INFO L93 Difference]: Finished difference Result 1322 states and 1691 transitions. [2020-10-12 16:32:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:32:22,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-12 16:32:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:22,814 INFO L225 Difference]: With dead ends: 1322 [2020-10-12 16:32:22,815 INFO L226 Difference]: Without dead ends: 1278 [2020-10-12 16:32:22,815 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 [2020-10-12 16:32:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-10-12 16:32:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1224. [2020-10-12 16:32:22,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-10-12 16:32:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1574 transitions. [2020-10-12 16:32:22,920 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1574 transitions. Word has length 51 [2020-10-12 16:32:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:22,920 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1574 transitions. [2020-10-12 16:32:22,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:32:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1574 transitions. [2020-10-12 16:32:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 16:32:22,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:22,922 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, 1, 1, 1, 1, 1, 1] [2020-10-12 16:32:22,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 16:32:22,923 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:22,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:22,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1208522397, now seen corresponding path program 1 times [2020-10-12 16:32:22,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:22,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991177692] [2020-10-12 16:32:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:23,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:23,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 16:32:23,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:32:23,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-12 16:32:23,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:32:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 16:32:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:32:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:23,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:23,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:23,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:23,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:23,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:23,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:23,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:23,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:23,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:23,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:23,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:24,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:24,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:24,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:24,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:24,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:32:24,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:24,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 16:32:24,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:32:24,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:24,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:32:24,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:24,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:32:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:24,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991177692] [2020-10-12 16:32:24,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:24,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:32:24,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119640177] [2020-10-12 16:32:24,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:32:24,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:24,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:32:24,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:32:24,180 INFO L87 Difference]: Start difference. First operand 1224 states and 1574 transitions. Second operand 13 states. [2020-10-12 16:32:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:26,038 INFO L93 Difference]: Finished difference Result 1324 states and 1693 transitions. [2020-10-12 16:32:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:32:26,040 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-12 16:32:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:26,046 INFO L225 Difference]: With dead ends: 1324 [2020-10-12 16:32:26,046 INFO L226 Difference]: Without dead ends: 1320 [2020-10-12 16:32:26,047 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 [2020-10-12 16:32:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2020-10-12 16:32:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1250. [2020-10-12 16:32:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-12 16:32:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1603 transitions. [2020-10-12 16:32:26,152 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1603 transitions. Word has length 51 [2020-10-12 16:32:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:26,152 INFO L479 AbstractCegarLoop]: Abstraction has 1250 states and 1603 transitions. [2020-10-12 16:32:26,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:32:26,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1603 transitions. [2020-10-12 16:32:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 16:32:26,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:26,154 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] [2020-10-12 16:32:26,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 16:32:26,154 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:26,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1208799227, now seen corresponding path program 1 times [2020-10-12 16:32:26,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:26,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337575263] [2020-10-12 16:32:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 16:32:27,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:32:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-12 16:32:27,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:32:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 16:32:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:32:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:27,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:27,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:27,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:27,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:27,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:27,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:27,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:27,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:32:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 16:32:27,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:32:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:27,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:32:27,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:27,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:32:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:27,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337575263] [2020-10-12 16:32:27,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:27,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:32:27,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327037985] [2020-10-12 16:32:27,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:32:27,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:27,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:32:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:32:27,901 INFO L87 Difference]: Start difference. First operand 1250 states and 1603 transitions. Second operand 13 states. [2020-10-12 16:32:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:29,961 INFO L93 Difference]: Finished difference Result 2069 states and 2701 transitions. [2020-10-12 16:32:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:32:29,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-12 16:32:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:29,969 INFO L225 Difference]: With dead ends: 2069 [2020-10-12 16:32:29,970 INFO L226 Difference]: Without dead ends: 1410 [2020-10-12 16:32:29,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:32:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-10-12 16:32:30,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1289. [2020-10-12 16:32:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-10-12 16:32:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1659 transitions. [2020-10-12 16:32:30,058 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1659 transitions. Word has length 51 [2020-10-12 16:32:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:30,058 INFO L479 AbstractCegarLoop]: Abstraction has 1289 states and 1659 transitions. [2020-10-12 16:32:30,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:32:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1659 transitions. [2020-10-12 16:32:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 16:32:30,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:30,060 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] [2020-10-12 16:32:30,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 16:32:30,060 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:30,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1357637008, now seen corresponding path program 1 times [2020-10-12 16:32:30,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:30,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119329279] [2020-10-12 16:32:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:30,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:30,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 16:32:30,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 16:32:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 16:32:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:32:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:30,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:30,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:30,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:30,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:30,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 16:32:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:30,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:30,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:32:30,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:30,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 16:32:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:32:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:30,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119329279] [2020-10-12 16:32:30,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:30,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:32:30,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764962916] [2020-10-12 16:32:30,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:32:30,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:32:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:32:30,302 INFO L87 Difference]: Start difference. First operand 1289 states and 1659 transitions. Second operand 8 states. [2020-10-12 16:32:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:31,921 INFO L93 Difference]: Finished difference Result 1438 states and 1822 transitions. [2020-10-12 16:32:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:32:31,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-12 16:32:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:31,927 INFO L225 Difference]: With dead ends: 1438 [2020-10-12 16:32:31,927 INFO L226 Difference]: Without dead ends: 1077 [2020-10-12 16:32:31,929 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 [2020-10-12 16:32:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-10-12 16:32:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 997. [2020-10-12 16:32:32,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-10-12 16:32:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1247 transitions. [2020-10-12 16:32:32,011 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1247 transitions. Word has length 53 [2020-10-12 16:32:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:32,011 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1247 transitions. [2020-10-12 16:32:32,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:32:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1247 transitions. [2020-10-12 16:32:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 16:32:32,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:32,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:32:32,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 16:32:32,014 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:32,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:32,014 INFO L82 PathProgramCache]: Analyzing trace with hash 987376175, now seen corresponding path program 1 times [2020-10-12 16:32:32,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:32,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202221230] [2020-10-12 16:32:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:32,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:32:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 16:32:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:32:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:32,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:32,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:32,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:33,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:32:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 16:32:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 16:32:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:33,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:33,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:33,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:32:33,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:32:33,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:32:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:33,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202221230] [2020-10-12 16:32:33,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:33,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:32:33,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582773531] [2020-10-12 16:32:33,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:32:33,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:32:33,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:32:33,229 INFO L87 Difference]: Start difference. First operand 997 states and 1247 transitions. Second operand 13 states. [2020-10-12 16:32:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:35,336 INFO L93 Difference]: Finished difference Result 1552 states and 1974 transitions. [2020-10-12 16:32:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:32:35,336 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-12 16:32:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:35,341 INFO L225 Difference]: With dead ends: 1552 [2020-10-12 16:32:35,341 INFO L226 Difference]: Without dead ends: 1151 [2020-10-12 16:32:35,343 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 [2020-10-12 16:32:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-12 16:32:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 997. [2020-10-12 16:32:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-10-12 16:32:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1247 transitions. [2020-10-12 16:32:35,410 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1247 transitions. Word has length 52 [2020-10-12 16:32:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:35,410 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1247 transitions. [2020-10-12 16:32:35,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:32:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1247 transitions. [2020-10-12 16:32:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 16:32:35,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:35,412 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] [2020-10-12 16:32:35,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 16:32:35,412 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1519216017, now seen corresponding path program 1 times [2020-10-12 16:32:35,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:35,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483263308] [2020-10-12 16:32:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:32:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:32:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-12 16:32:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:32:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:35,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:35,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:35,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:35,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:36,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:36,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:36,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:32:36,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:36,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 16:32:36,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 16:32:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:32:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:36,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:36,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:32:36,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:36,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 16:32:36,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:32:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:32:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:36,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483263308] [2020-10-12 16:32:36,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:36,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:32:36,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022368621] [2020-10-12 16:32:36,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:32:36,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:36,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:32:36,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:32:36,253 INFO L87 Difference]: Start difference. First operand 997 states and 1247 transitions. Second operand 12 states. [2020-10-12 16:32:36,404 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-12 16:32:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:39,283 INFO L93 Difference]: Finished difference Result 1250 states and 1575 transitions. [2020-10-12 16:32:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 16:32:39,284 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-12 16:32:39,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:39,288 INFO L225 Difference]: With dead ends: 1250 [2020-10-12 16:32:39,288 INFO L226 Difference]: Without dead ends: 1147 [2020-10-12 16:32:39,289 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 [2020-10-12 16:32:39,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-10-12 16:32:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 948. [2020-10-12 16:32:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-10-12 16:32:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1185 transitions. [2020-10-12 16:32:39,354 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1185 transitions. Word has length 52 [2020-10-12 16:32:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:39,354 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1185 transitions. [2020-10-12 16:32:39,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:32:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1185 transitions. [2020-10-12 16:32:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 16:32:39,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:39,356 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] [2020-10-12 16:32:39,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 16:32:39,356 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash -581698746, now seen corresponding path program 1 times [2020-10-12 16:32:39,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:39,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023415383] [2020-10-12 16:32:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:39,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:39,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:32:39,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 16:32:39,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 16:32:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:32:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:39,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:39,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:39,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:39,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:39,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:39,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:39,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:39,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:32:39,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 16:32:39,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 16:32:39,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:32:39,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:32:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:32:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:39,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023415383] [2020-10-12 16:32:39,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:39,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:32:39,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519121681] [2020-10-12 16:32:39,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:32:39,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:32:39,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:32:39,792 INFO L87 Difference]: Start difference. First operand 948 states and 1185 transitions. Second operand 8 states. [2020-10-12 16:32:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:41,211 INFO L93 Difference]: Finished difference Result 1281 states and 1617 transitions. [2020-10-12 16:32:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:32:41,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-12 16:32:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:41,215 INFO L225 Difference]: With dead ends: 1281 [2020-10-12 16:32:41,215 INFO L226 Difference]: Without dead ends: 1251 [2020-10-12 16:32:41,216 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 [2020-10-12 16:32:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-10-12 16:32:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1032. [2020-10-12 16:32:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-12 16:32:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1281 transitions. [2020-10-12 16:32:41,290 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1281 transitions. Word has length 52 [2020-10-12 16:32:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:41,290 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1281 transitions. [2020-10-12 16:32:41,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:32:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1281 transitions. [2020-10-12 16:32:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 16:32:41,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:41,292 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] [2020-10-12 16:32:41,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 16:32:41,292 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash -724978104, now seen corresponding path program 1 times [2020-10-12 16:32:41,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:41,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005727232] [2020-10-12 16:32:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:41,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:41,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:32:41,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 16:32:41,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:32:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:41,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:41,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:41,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:41,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:41,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:41,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:41,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:41,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:41,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:41,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:32:41,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 16:32:41,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 16:32:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 16:32:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:41,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:32:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:41,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005727232] [2020-10-12 16:32:41,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:41,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:32:41,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021710963] [2020-10-12 16:32:41,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:32:41,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:32:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:32:41,717 INFO L87 Difference]: Start difference. First operand 1032 states and 1281 transitions. Second operand 12 states. [2020-10-12 16:32:41,866 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-12 16:32:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:43,767 INFO L93 Difference]: Finished difference Result 1138 states and 1407 transitions. [2020-10-12 16:32:43,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:32:43,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-12 16:32:43,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:43,772 INFO L225 Difference]: With dead ends: 1138 [2020-10-12 16:32:43,772 INFO L226 Difference]: Without dead ends: 952 [2020-10-12 16:32:43,773 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 [2020-10-12 16:32:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-12 16:32:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 862. [2020-10-12 16:32:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-12 16:32:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1067 transitions. [2020-10-12 16:32:43,839 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1067 transitions. Word has length 52 [2020-10-12 16:32:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:43,839 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 1067 transitions. [2020-10-12 16:32:43,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:32:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1067 transitions. [2020-10-12 16:32:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 16:32:43,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:43,840 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] [2020-10-12 16:32:43,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 16:32:43,840 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:43,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:43,841 INFO L82 PathProgramCache]: Analyzing trace with hash -31006542, now seen corresponding path program 1 times [2020-10-12 16:32:43,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:43,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591286674] [2020-10-12 16:32:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 16:32:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:32:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-12 16:32:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:32:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-12 16:32:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:32:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:44,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:44,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:44,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:44,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:44,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 16:32:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 16:32:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 16:32:44,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:44,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:32:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 16:32:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:44,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:32:44,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:44,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591286674] [2020-10-12 16:32:44,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:44,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:32:44,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966250464] [2020-10-12 16:32:44,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:32:44,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:44,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:32:44,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:32:44,542 INFO L87 Difference]: Start difference. First operand 862 states and 1067 transitions. Second operand 14 states. [2020-10-12 16:32:46,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:46,350 INFO L93 Difference]: Finished difference Result 943 states and 1164 transitions. [2020-10-12 16:32:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:32:46,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-12 16:32:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:46,355 INFO L225 Difference]: With dead ends: 943 [2020-10-12 16:32:46,355 INFO L226 Difference]: Without dead ends: 915 [2020-10-12 16:32:46,356 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 [2020-10-12 16:32:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-12 16:32:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 847. [2020-10-12 16:32:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-10-12 16:32:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1050 transitions. [2020-10-12 16:32:46,415 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1050 transitions. Word has length 53 [2020-10-12 16:32:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:46,416 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1050 transitions. [2020-10-12 16:32:46,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:32:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1050 transitions. [2020-10-12 16:32:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 16:32:46,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:46,417 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] [2020-10-12 16:32:46,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 16:32:46,417 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 888645287, now seen corresponding path program 1 times [2020-10-12 16:32:46,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:46,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909515007] [2020-10-12 16:32:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 16:32:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:32:46,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:46,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:46,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 16:32:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:32:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:46,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:32:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:46,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:46,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 16:32:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:46,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:46,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:46,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:46,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:46,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:46,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:46,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:46,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:46,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:46,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909515007] [2020-10-12 16:32:46,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:46,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:32:46,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127791799] [2020-10-12 16:32:46,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:32:46,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:46,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:32:46,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:32:46,865 INFO L87 Difference]: Start difference. First operand 847 states and 1050 transitions. Second operand 8 states. [2020-10-12 16:32:48,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:48,290 INFO L93 Difference]: Finished difference Result 1254 states and 1574 transitions. [2020-10-12 16:32:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:32:48,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-12 16:32:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:48,295 INFO L225 Difference]: With dead ends: 1254 [2020-10-12 16:32:48,295 INFO L226 Difference]: Without dead ends: 924 [2020-10-12 16:32:48,297 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 [2020-10-12 16:32:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-10-12 16:32:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 852. [2020-10-12 16:32:48,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-10-12 16:32:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1056 transitions. [2020-10-12 16:32:48,387 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1056 transitions. Word has length 58 [2020-10-12 16:32:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:48,388 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1056 transitions. [2020-10-12 16:32:48,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:32:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1056 transitions. [2020-10-12 16:32:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:32:48,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:48,390 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] [2020-10-12 16:32:48,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 16:32:48,390 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:48,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1936985802, now seen corresponding path program 1 times [2020-10-12 16:32:48,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:48,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47937682] [2020-10-12 16:32:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:32:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:32:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 16:32:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 16:32:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:48,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:32:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:32:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 16:32:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 16:32:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:48,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 16:32:48,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:48,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47937682] [2020-10-12 16:32:48,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:48,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 16:32:48,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452236043] [2020-10-12 16:32:48,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:32:48,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:48,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:32:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:32:48,966 INFO L87 Difference]: Start difference. First operand 852 states and 1056 transitions. Second operand 9 states. [2020-10-12 16:32:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:50,832 INFO L93 Difference]: Finished difference Result 1006 states and 1248 transitions. [2020-10-12 16:32:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:32:50,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-12 16:32:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:50,837 INFO L225 Difference]: With dead ends: 1006 [2020-10-12 16:32:50,838 INFO L226 Difference]: Without dead ends: 988 [2020-10-12 16:32:50,839 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 [2020-10-12 16:32:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-12 16:32:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 855. [2020-10-12 16:32:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-10-12 16:32:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1064 transitions. [2020-10-12 16:32:50,915 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1064 transitions. Word has length 54 [2020-10-12 16:32:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:50,915 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1064 transitions. [2020-10-12 16:32:50,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:32:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1064 transitions. [2020-10-12 16:32:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 16:32:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:50,916 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] [2020-10-12 16:32:50,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 16:32:50,917 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash -15936700, now seen corresponding path program 1 times [2020-10-12 16:32:50,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:50,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649969837] [2020-10-12 16:32:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 16:32:51,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 16:32:51,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 16:32:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:51,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:32:51,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:51,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 16:32:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:32:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 16:32:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:32:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:32:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:32:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:32:51,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:32:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:32:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:51,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:51,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:51,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649969837] [2020-10-12 16:32:51,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:51,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:32:51,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715607515] [2020-10-12 16:32:51,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:32:51,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:51,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:32:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:32:51,488 INFO L87 Difference]: Start difference. First operand 855 states and 1064 transitions. Second operand 10 states. [2020-10-12 16:32:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:53,113 INFO L93 Difference]: Finished difference Result 1209 states and 1517 transitions. [2020-10-12 16:32:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:32:53,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-12 16:32:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:53,116 INFO L225 Difference]: With dead ends: 1209 [2020-10-12 16:32:53,116 INFO L226 Difference]: Without dead ends: 855 [2020-10-12 16:32:53,119 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 [2020-10-12 16:32:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-12 16:32:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 791. [2020-10-12 16:32:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-12 16:32:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 972 transitions. [2020-10-12 16:32:53,211 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 972 transitions. Word has length 64 [2020-10-12 16:32:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:53,212 INFO L479 AbstractCegarLoop]: Abstraction has 791 states and 972 transitions. [2020-10-12 16:32:53,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:32:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 972 transitions. [2020-10-12 16:32:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 16:32:53,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:53,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:32:53,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 16:32:53,216 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1108815620, now seen corresponding path program 1 times [2020-10-12 16:32:53,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:53,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559585046] [2020-10-12 16:32:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 16:32:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:32:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-12 16:32:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:32:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 16:32:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 16:32:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:53,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:53,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:32:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:53,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:53,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:53,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:53,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:53,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:53,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:53,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:32:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:53,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:53,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 16:32:53,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:53,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 16:32:53,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:53,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 16:32:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:32:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:54,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:54,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:32:54,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:54,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:54,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 16:32:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:54,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:54,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:32:54,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:54,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:32:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:54,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559585046] [2020-10-12 16:32:54,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:54,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:32:54,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883774787] [2020-10-12 16:32:54,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:32:54,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:54,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:32:54,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:32:54,064 INFO L87 Difference]: Start difference. First operand 791 states and 972 transitions. Second operand 12 states. [2020-10-12 16:32:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:55,859 INFO L93 Difference]: Finished difference Result 881 states and 1078 transitions. [2020-10-12 16:32:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:32:55,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-12 16:32:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:55,863 INFO L225 Difference]: With dead ends: 881 [2020-10-12 16:32:55,864 INFO L226 Difference]: Without dead ends: 850 [2020-10-12 16:32:55,864 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 [2020-10-12 16:32:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-12 16:32:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 779. [2020-10-12 16:32:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-10-12 16:32:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 956 transitions. [2020-10-12 16:32:55,929 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 956 transitions. Word has length 59 [2020-10-12 16:32:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:55,929 INFO L479 AbstractCegarLoop]: Abstraction has 779 states and 956 transitions. [2020-10-12 16:32:55,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:32:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 956 transitions. [2020-10-12 16:32:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 16:32:55,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:55,931 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] [2020-10-12 16:32:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 16:32:55,931 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1136965517, now seen corresponding path program 1 times [2020-10-12 16:32:55,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:55,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590522534] [2020-10-12 16:32:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 16:32:56,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 16:32:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:32:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 16:32:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:32:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:56,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:56,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:56,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:56,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:56,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:32:56,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:56,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:56,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:56,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:56,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:56,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:32:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:56,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:56,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:32:56,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 16:32:56,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:32:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 16:32:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:32:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:32:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:32:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:32:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:32:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:56,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590522534] [2020-10-12 16:32:56,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:56,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:32:56,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893923410] [2020-10-12 16:32:56,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:32:56,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:32:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:32:56,570 INFO L87 Difference]: Start difference. First operand 779 states and 956 transitions. Second operand 13 states. [2020-10-12 16:32:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:58,596 INFO L93 Difference]: Finished difference Result 852 states and 1042 transitions. [2020-10-12 16:32:58,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:32:58,597 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-12 16:32:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:58,601 INFO L225 Difference]: With dead ends: 852 [2020-10-12 16:32:58,601 INFO L226 Difference]: Without dead ends: 834 [2020-10-12 16:32:58,601 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 [2020-10-12 16:32:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-12 16:32:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 775. [2020-10-12 16:32:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-10-12 16:32:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 950 transitions. [2020-10-12 16:32:58,697 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 950 transitions. Word has length 58 [2020-10-12 16:32:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:58,697 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 950 transitions. [2020-10-12 16:32:58,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:32:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 950 transitions. [2020-10-12 16:32:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 16:32:58,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:58,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:32:58,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 16:32:58,700 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:58,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1833311275, now seen corresponding path program 1 times [2020-10-12 16:32:58,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:58,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755378040] [2020-10-12 16:32:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 16:32:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 16:32:58,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:32:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 16:32:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:32:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:58,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:58,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:58,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:32:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:58,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:58,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:32:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:32:59,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:32:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 16:32:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:59,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:59,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 16:32:59,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 16:32:59,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:32:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 16:32:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:32:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:32:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:59,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:32:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:32:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:32:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:59,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:59,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:59,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:59,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:32:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:32:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:32:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:32:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:32:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:32:59,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:32:59,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:32:59,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:32:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:32:59,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:32:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:32:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:32:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:32:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:32:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:32:59,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755378040] [2020-10-12 16:32:59,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:32:59,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:32:59,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538224315] [2020-10-12 16:32:59,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:32:59,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:32:59,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:32:59,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:32:59,136 INFO L87 Difference]: Start difference. First operand 775 states and 950 transitions. Second operand 12 states. [2020-10-12 16:33:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:01,232 INFO L93 Difference]: Finished difference Result 1102 states and 1356 transitions. [2020-10-12 16:33:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:33:01,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 16:33:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:01,236 INFO L225 Difference]: With dead ends: 1102 [2020-10-12 16:33:01,237 INFO L226 Difference]: Without dead ends: 812 [2020-10-12 16:33:01,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-10-12 16:33:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-12 16:33:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 747. [2020-10-12 16:33:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-10-12 16:33:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 904 transitions. [2020-10-12 16:33:01,323 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 904 transitions. Word has length 68 [2020-10-12 16:33:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:01,323 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 904 transitions. [2020-10-12 16:33:01,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:33:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 904 transitions. [2020-10-12 16:33:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 16:33:01,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:01,325 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] [2020-10-12 16:33:01,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 16:33:01,325 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:01,326 INFO L82 PathProgramCache]: Analyzing trace with hash 569075231, now seen corresponding path program 1 times [2020-10-12 16:33:01,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:01,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074415747] [2020-10-12 16:33:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:01,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:02,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:02,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 16:33:02,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:33:02,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-12 16:33:02,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 16:33:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 16:33:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:02,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:02,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:02,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:02,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:02,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:02,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:02,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:33:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:03,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:03,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:33:03,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 16:33:03,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:33:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 16:33:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 16:33:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:03,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:33:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:33:03,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:33:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:33:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:33:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:03,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:03,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:33:03,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:03,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:33:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:03,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074415747] [2020-10-12 16:33:03,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:03,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:03,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043264246] [2020-10-12 16:33:03,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:03,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:03,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:03,318 INFO L87 Difference]: Start difference. First operand 747 states and 904 transitions. Second operand 14 states. [2020-10-12 16:33:05,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:05,448 INFO L93 Difference]: Finished difference Result 820 states and 992 transitions. [2020-10-12 16:33:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:33:05,449 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-12 16:33:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:05,452 INFO L225 Difference]: With dead ends: 820 [2020-10-12 16:33:05,453 INFO L226 Difference]: Without dead ends: 786 [2020-10-12 16:33:05,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:33:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-10-12 16:33:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 727. [2020-10-12 16:33:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-12 16:33:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-10-12 16:33:05,550 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 61 [2020-10-12 16:33:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:05,550 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-10-12 16:33:05,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-10-12 16:33:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 16:33:05,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:05,553 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] [2020-10-12 16:33:05,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 16:33:05,553 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash 4723346, now seen corresponding path program 1 times [2020-10-12 16:33:05,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:05,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735047132] [2020-10-12 16:33:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 16:33:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-12 16:33:05,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 16:33:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:33:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:06,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:33:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:06,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:06,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:06,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:06,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:06,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:06,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:06,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:06,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:33:06,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 16:33:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 16:33:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:33:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:33:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:06,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:06,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:33:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:33:06,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:33:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:33:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:06,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:33:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 16:33:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:33:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:06,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735047132] [2020-10-12 16:33:06,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:06,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 16:33:06,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494860554] [2020-10-12 16:33:06,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:33:06,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:06,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:33:06,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:33:06,269 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 11 states. [2020-10-12 16:33:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:08,101 INFO L93 Difference]: Finished difference Result 796 states and 963 transitions. [2020-10-12 16:33:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:33:08,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-12 16:33:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:08,106 INFO L225 Difference]: With dead ends: 796 [2020-10-12 16:33:08,106 INFO L226 Difference]: Without dead ends: 764 [2020-10-12 16:33:08,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:33:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-12 16:33:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 700. [2020-10-12 16:33:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-10-12 16:33:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 849 transitions. [2020-10-12 16:33:08,190 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 849 transitions. Word has length 62 [2020-10-12 16:33:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:08,191 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 849 transitions. [2020-10-12 16:33:08,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:33:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 849 transitions. [2020-10-12 16:33:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 16:33:08,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:08,193 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] [2020-10-12 16:33:08,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 16:33:08,193 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:08,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1152303328, now seen corresponding path program 1 times [2020-10-12 16:33:08,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:08,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304401688] [2020-10-12 16:33:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 16:33:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:33:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-12 16:33:09,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 16:33:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:09,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:33:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:33:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 16:33:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:33:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:33:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 16:33:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:33:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:33:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 16:33:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:09,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:09,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 16:33:09,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:33:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:33:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:33:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:09,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304401688] [2020-10-12 16:33:09,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:09,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:09,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211052843] [2020-10-12 16:33:09,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:09,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:09,908 INFO L87 Difference]: Start difference. First operand 700 states and 849 transitions. Second operand 14 states. [2020-10-12 16:33:12,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:12,492 INFO L93 Difference]: Finished difference Result 759 states and 919 transitions. [2020-10-12 16:33:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 16:33:12,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-12 16:33:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:12,497 INFO L225 Difference]: With dead ends: 759 [2020-10-12 16:33:12,497 INFO L226 Difference]: Without dead ends: 715 [2020-10-12 16:33:12,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-12 16:33:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-12 16:33:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 662. [2020-10-12 16:33:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-12 16:33:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 797 transitions. [2020-10-12 16:33:12,579 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 797 transitions. Word has length 63 [2020-10-12 16:33:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:12,580 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 797 transitions. [2020-10-12 16:33:12,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:12,580 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 797 transitions. [2020-10-12 16:33:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 16:33:12,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:12,582 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] [2020-10-12 16:33:12,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 16:33:12,582 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:12,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1148358352, now seen corresponding path program 1 times [2020-10-12 16:33:12,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:12,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3366276] [2020-10-12 16:33:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:12,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:33:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:13,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:13,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:13,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 16:33:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:13,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:33:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:33:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:13,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:13,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:13,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3366276] [2020-10-12 16:33:13,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:13,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:33:13,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340496437] [2020-10-12 16:33:13,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:33:13,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:13,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:33:13,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:33:13,175 INFO L87 Difference]: Start difference. First operand 662 states and 797 transitions. Second operand 12 states. [2020-10-12 16:33:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:14,906 INFO L93 Difference]: Finished difference Result 999 states and 1214 transitions. [2020-10-12 16:33:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 16:33:14,907 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-12 16:33:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:14,910 INFO L225 Difference]: With dead ends: 999 [2020-10-12 16:33:14,910 INFO L226 Difference]: Without dead ends: 764 [2020-10-12 16:33:14,911 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 [2020-10-12 16:33:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-12 16:33:14,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 662. [2020-10-12 16:33:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-12 16:33:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 795 transitions. [2020-10-12 16:33:14,995 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 795 transitions. Word has length 71 [2020-10-12 16:33:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:14,996 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 795 transitions. [2020-10-12 16:33:14,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:33:14,996 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 795 transitions. [2020-10-12 16:33:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 16:33:14,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:14,998 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] [2020-10-12 16:33:14,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 16:33:14,998 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:14,998 INFO L82 PathProgramCache]: Analyzing trace with hash -424680973, now seen corresponding path program 1 times [2020-10-12 16:33:14,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:14,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550036292] [2020-10-12 16:33:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 16:33:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 16:33:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 16:33:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:33:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:15,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:15,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:15,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:15,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:15,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:15,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:15,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:15,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:15,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:15,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:15,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:15,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:15,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:15,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:33:15,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 16:33:15,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 16:33:15,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:15,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:15,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:15,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:15,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:15,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:33:15,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:15,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:15,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:15,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550036292] [2020-10-12 16:33:15,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:15,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:15,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208602185] [2020-10-12 16:33:15,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:15,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:15,523 INFO L87 Difference]: Start difference. First operand 662 states and 795 transitions. Second operand 14 states. [2020-10-12 16:33:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:17,532 INFO L93 Difference]: Finished difference Result 738 states and 884 transitions. [2020-10-12 16:33:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:33:17,533 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-12 16:33:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:17,536 INFO L225 Difference]: With dead ends: 738 [2020-10-12 16:33:17,537 INFO L226 Difference]: Without dead ends: 717 [2020-10-12 16:33:17,537 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 [2020-10-12 16:33:17,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-12 16:33:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 658. [2020-10-12 16:33:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-12 16:33:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 789 transitions. [2020-10-12 16:33:17,621 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 789 transitions. Word has length 63 [2020-10-12 16:33:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:17,622 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 789 transitions. [2020-10-12 16:33:17,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 789 transitions. [2020-10-12 16:33:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 16:33:17,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:17,624 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] [2020-10-12 16:33:17,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 16:33:17,624 INFO L427 AbstractCegarLoop]: === Iteration 41 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:17,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1434577785, now seen corresponding path program 1 times [2020-10-12 16:33:17,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:17,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152650297] [2020-10-12 16:33:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:17,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 16:33:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 16:33:17,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 16:33:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:33:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:17,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:17,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:17,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:17,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:17,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:17,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:17,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:18,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:18,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 16:33:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:18,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:33:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:18,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:18,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:18,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:18,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:33:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:18,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152650297] [2020-10-12 16:33:18,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:18,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:18,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260051981] [2020-10-12 16:33:18,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:18,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:18,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:18,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:18,110 INFO L87 Difference]: Start difference. First operand 658 states and 789 transitions. Second operand 14 states. [2020-10-12 16:33:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:19,905 INFO L93 Difference]: Finished difference Result 734 states and 878 transitions. [2020-10-12 16:33:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:33:19,905 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 16:33:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:19,907 INFO L225 Difference]: With dead ends: 734 [2020-10-12 16:33:19,908 INFO L226 Difference]: Without dead ends: 712 [2020-10-12 16:33:19,908 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 [2020-10-12 16:33:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-12 16:33:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 653. [2020-10-12 16:33:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-10-12 16:33:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 782 transitions. [2020-10-12 16:33:19,962 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 782 transitions. Word has length 64 [2020-10-12 16:33:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:19,962 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 782 transitions. [2020-10-12 16:33:19,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 782 transitions. [2020-10-12 16:33:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 16:33:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:19,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:33:19,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 16:33:19,963 INFO L427 AbstractCegarLoop]: === Iteration 42 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:19,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1930278041, now seen corresponding path program 1 times [2020-10-12 16:33:19,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:19,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821394843] [2020-10-12 16:33:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 16:33:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:33:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:20,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:20,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:20,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:20,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:20,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:20,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:20,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:20,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:20,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:20,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:20,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 16:33:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:33:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:20,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:33:20,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:20,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821394843] [2020-10-12 16:33:20,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:20,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:20,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440970096] [2020-10-12 16:33:20,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:20,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:20,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:20,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:20,495 INFO L87 Difference]: Start difference. First operand 653 states and 782 transitions. Second operand 14 states. [2020-10-12 16:33:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:22,348 INFO L93 Difference]: Finished difference Result 729 states and 871 transitions. [2020-10-12 16:33:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:33:22,349 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 16:33:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:22,351 INFO L225 Difference]: With dead ends: 729 [2020-10-12 16:33:22,351 INFO L226 Difference]: Without dead ends: 708 [2020-10-12 16:33:22,351 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 [2020-10-12 16:33:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-12 16:33:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 649. [2020-10-12 16:33:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-10-12 16:33:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 776 transitions. [2020-10-12 16:33:22,431 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 776 transitions. Word has length 64 [2020-10-12 16:33:22,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:22,432 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 776 transitions. [2020-10-12 16:33:22,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 776 transitions. [2020-10-12 16:33:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 16:33:22,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:22,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:33:22,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 16:33:22,434 INFO L427 AbstractCegarLoop]: === Iteration 43 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:22,434 INFO L82 PathProgramCache]: Analyzing trace with hash 95437333, now seen corresponding path program 1 times [2020-10-12 16:33:22,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:22,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608051135] [2020-10-12 16:33:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:33:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:22,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:22,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:22,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:22,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:22,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 16:33:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:22,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 16:33:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 16:33:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:22,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:22,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:22,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:33:22,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:22,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608051135] [2020-10-12 16:33:22,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:22,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:33:22,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198615044] [2020-10-12 16:33:22,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:33:22,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:22,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:33:22,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:33:22,910 INFO L87 Difference]: Start difference. First operand 649 states and 776 transitions. Second operand 13 states. [2020-10-12 16:33:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:24,386 INFO L93 Difference]: Finished difference Result 719 states and 859 transitions. [2020-10-12 16:33:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:33:24,386 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-12 16:33:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:24,388 INFO L225 Difference]: With dead ends: 719 [2020-10-12 16:33:24,388 INFO L226 Difference]: Without dead ends: 683 [2020-10-12 16:33:24,389 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 [2020-10-12 16:33:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-12 16:33:24,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 588. [2020-10-12 16:33:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-10-12 16:33:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 705 transitions. [2020-10-12 16:33:24,441 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 705 transitions. Word has length 64 [2020-10-12 16:33:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:24,441 INFO L479 AbstractCegarLoop]: Abstraction has 588 states and 705 transitions. [2020-10-12 16:33:24,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:33:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 705 transitions. [2020-10-12 16:33:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 16:33:24,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:24,443 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] [2020-10-12 16:33:24,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 16:33:24,443 INFO L427 AbstractCegarLoop]: === Iteration 44 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 581961159, now seen corresponding path program 1 times [2020-10-12 16:33:24,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:24,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983403118] [2020-10-12 16:33:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 16:33:24,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 16:33:24,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:24,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 16:33:24,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 16:33:24,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:24,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:24,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:24,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:33:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:33:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:33:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:33:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:33:24,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:33:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:33:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:24,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:33:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:24,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983403118] [2020-10-12 16:33:24,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:24,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 16:33:24,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136681358] [2020-10-12 16:33:24,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:33:24,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:33:24,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:33:24,851 INFO L87 Difference]: Start difference. First operand 588 states and 705 transitions. Second operand 9 states. [2020-10-12 16:33:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:26,361 INFO L93 Difference]: Finished difference Result 1047 states and 1274 transitions. [2020-10-12 16:33:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:33:26,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-12 16:33:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:26,364 INFO L225 Difference]: With dead ends: 1047 [2020-10-12 16:33:26,364 INFO L226 Difference]: Without dead ends: 785 [2020-10-12 16:33:26,365 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 [2020-10-12 16:33:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-12 16:33:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 709. [2020-10-12 16:33:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-12 16:33:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 853 transitions. [2020-10-12 16:33:26,427 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 853 transitions. Word has length 70 [2020-10-12 16:33:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:26,427 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 853 transitions. [2020-10-12 16:33:26,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:33:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 853 transitions. [2020-10-12 16:33:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 16:33:26,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:26,429 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] [2020-10-12 16:33:26,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 16:33:26,429 INFO L427 AbstractCegarLoop]: === Iteration 45 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:26,429 INFO L82 PathProgramCache]: Analyzing trace with hash -225813176, now seen corresponding path program 1 times [2020-10-12 16:33:26,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:26,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362479187] [2020-10-12 16:33:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:26,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 16:33:26,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:26,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 16:33:26,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 16:33:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:33:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:26,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:26,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:26,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:26,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:33:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:26,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:26,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:26,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:26,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:26,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:26,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:26,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 16:33:26,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 16:33:26,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 16:33:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 16:33:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:26,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:26,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:33:26,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:26,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362479187] [2020-10-12 16:33:26,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:26,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:26,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857523961] [2020-10-12 16:33:26,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:26,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:26,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:26,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:26,886 INFO L87 Difference]: Start difference. First operand 709 states and 853 transitions. Second operand 14 states. [2020-10-12 16:33:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:28,467 INFO L93 Difference]: Finished difference Result 775 states and 931 transitions. [2020-10-12 16:33:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:33:28,468 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-12 16:33:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:28,470 INFO L225 Difference]: With dead ends: 775 [2020-10-12 16:33:28,471 INFO L226 Difference]: Without dead ends: 732 [2020-10-12 16:33:28,471 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 [2020-10-12 16:33:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-12 16:33:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 683. [2020-10-12 16:33:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-12 16:33:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 821 transitions. [2020-10-12 16:33:28,533 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 821 transitions. Word has length 68 [2020-10-12 16:33:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:28,533 INFO L479 AbstractCegarLoop]: Abstraction has 683 states and 821 transitions. [2020-10-12 16:33:28,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 821 transitions. [2020-10-12 16:33:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 16:33:28,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:28,534 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] [2020-10-12 16:33:28,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 16:33:28,535 INFO L427 AbstractCegarLoop]: === Iteration 46 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1321469063, now seen corresponding path program 1 times [2020-10-12 16:33:28,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:28,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995160426] [2020-10-12 16:33:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 16:33:28,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 16:33:28,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 16:33:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:33:28,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:28,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:28,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:28,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:28,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 16:33:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 16:33:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:33:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:33:28,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:28,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:28,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:28,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:28,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:28,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 16:33:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:28,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:28,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:33:28,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:33:28,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:33:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:33:28,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:28,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995160426] [2020-10-12 16:33:28,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:28,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 16:33:28,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092324561] [2020-10-12 16:33:28,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:33:28,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:28,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:33:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:33:29,000 INFO L87 Difference]: Start difference. First operand 683 states and 821 transitions. Second operand 11 states. [2020-10-12 16:33:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:30,742 INFO L93 Difference]: Finished difference Result 1042 states and 1263 transitions. [2020-10-12 16:33:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 16:33:30,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-12 16:33:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:30,745 INFO L225 Difference]: With dead ends: 1042 [2020-10-12 16:33:30,746 INFO L226 Difference]: Without dead ends: 716 [2020-10-12 16:33:30,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:33:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-12 16:33:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 661. [2020-10-12 16:33:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-12 16:33:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 786 transitions. [2020-10-12 16:33:30,811 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 786 transitions. Word has length 82 [2020-10-12 16:33:30,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:30,811 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 786 transitions. [2020-10-12 16:33:30,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:33:30,811 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 786 transitions. [2020-10-12 16:33:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 16:33:30,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:30,812 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] [2020-10-12 16:33:30,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 16:33:30,812 INFO L427 AbstractCegarLoop]: === Iteration 47 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 531350456, now seen corresponding path program 1 times [2020-10-12 16:33:30,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:30,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366342235] [2020-10-12 16:33:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 16:33:31,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-12 16:33:31,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:33:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 16:33:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:33:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:31,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:31,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:31,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:33:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:33:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:33:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:31,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:31,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:31,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:31,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 16:33:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:31,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:31,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 16:33:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:31,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366342235] [2020-10-12 16:33:31,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:31,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:31,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747531323] [2020-10-12 16:33:31,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:31,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:31,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:31,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:31,514 INFO L87 Difference]: Start difference. First operand 661 states and 786 transitions. Second operand 14 states. [2020-10-12 16:33:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:33,013 INFO L93 Difference]: Finished difference Result 1061 states and 1303 transitions. [2020-10-12 16:33:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 16:33:33,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-12 16:33:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:33,017 INFO L225 Difference]: With dead ends: 1061 [2020-10-12 16:33:33,017 INFO L226 Difference]: Without dead ends: 807 [2020-10-12 16:33:33,018 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 [2020-10-12 16:33:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-10-12 16:33:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 620. [2020-10-12 16:33:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-12 16:33:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 734 transitions. [2020-10-12 16:33:33,072 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 734 transitions. Word has length 83 [2020-10-12 16:33:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:33,072 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 734 transitions. [2020-10-12 16:33:33,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 734 transitions. [2020-10-12 16:33:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 16:33:33,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:33,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:33:33,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 16:33:33,073 INFO L427 AbstractCegarLoop]: === Iteration 48 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:33,074 INFO L82 PathProgramCache]: Analyzing trace with hash -105592002, now seen corresponding path program 1 times [2020-10-12 16:33:33,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:33,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851638408] [2020-10-12 16:33:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 16:33:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:33:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-10-12 16:33:35,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 16:33:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:33:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:35,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:35,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:35,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:35,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:35,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:35,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 16:33:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 16:33:35,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 16:33:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:33:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 16:33:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 16:33:35,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:35,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 16:33:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:33:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:35,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851638408] [2020-10-12 16:33:35,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:35,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 16:33:35,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641330883] [2020-10-12 16:33:35,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:33:35,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:35,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:33:35,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:33:35,853 INFO L87 Difference]: Start difference. First operand 620 states and 734 transitions. Second operand 16 states. [2020-10-12 16:33:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:38,156 INFO L93 Difference]: Finished difference Result 671 states and 796 transitions. [2020-10-12 16:33:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:33:38,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-12 16:33:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:38,159 INFO L225 Difference]: With dead ends: 671 [2020-10-12 16:33:38,159 INFO L226 Difference]: Without dead ends: 557 [2020-10-12 16:33:38,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-12 16:33:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-12 16:33:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 528. [2020-10-12 16:33:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-12 16:33:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 625 transitions. [2020-10-12 16:33:38,203 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 625 transitions. Word has length 80 [2020-10-12 16:33:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:38,204 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 625 transitions. [2020-10-12 16:33:38,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:33:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 625 transitions. [2020-10-12 16:33:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 16:33:38,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:38,205 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] [2020-10-12 16:33:38,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 16:33:38,205 INFO L427 AbstractCegarLoop]: === Iteration 49 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1163563034, now seen corresponding path program 1 times [2020-10-12 16:33:38,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:38,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595712896] [2020-10-12 16:33:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:38,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 16:33:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 16:33:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:39,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:39,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:39,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:33:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 16:33:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 16:33:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:33:39,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 16:33:39,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 16:33:39,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:33:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:33:39,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:39,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:39,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:39,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:39,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:39,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 16:33:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:39,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:39,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:33:39,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:39,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:33:39,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:39,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595712896] [2020-10-12 16:33:39,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:39,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 16:33:39,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292877465] [2020-10-12 16:33:39,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:33:39,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:39,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:33:39,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:33:39,732 INFO L87 Difference]: Start difference. First operand 528 states and 625 transitions. Second operand 16 states. [2020-10-12 16:33:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:41,621 INFO L93 Difference]: Finished difference Result 606 states and 717 transitions. [2020-10-12 16:33:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 16:33:41,622 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-10-12 16:33:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:41,624 INFO L225 Difference]: With dead ends: 606 [2020-10-12 16:33:41,624 INFO L226 Difference]: Without dead ends: 585 [2020-10-12 16:33:41,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-12 16:33:41,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-10-12 16:33:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 536. [2020-10-12 16:33:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-12 16:33:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 635 transitions. [2020-10-12 16:33:41,670 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 635 transitions. Word has length 87 [2020-10-12 16:33:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:41,671 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 635 transitions. [2020-10-12 16:33:41,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:33:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 635 transitions. [2020-10-12 16:33:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 16:33:41,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:41,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:33:41,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 16:33:41,673 INFO L427 AbstractCegarLoop]: === Iteration 50 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1889580816, now seen corresponding path program 1 times [2020-10-12 16:33:41,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:41,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495359773] [2020-10-12 16:33:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 16:33:42,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:33:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-12 16:33:42,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:33:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 16:33:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 16:33:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:42,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:42,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 16:33:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:33:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:33:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:33:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:42,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:43,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:43,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:43,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:33:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:43,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:43,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:43,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:33:43,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 16:33:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:43,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:43,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:33:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:43,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495359773] [2020-10-12 16:33:43,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:43,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 16:33:43,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373255880] [2020-10-12 16:33:43,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:33:43,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:33:43,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:33:43,039 INFO L87 Difference]: Start difference. First operand 536 states and 635 transitions. Second operand 16 states. [2020-10-12 16:33:44,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:44,525 INFO L93 Difference]: Finished difference Result 606 states and 716 transitions. [2020-10-12 16:33:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 16:33:44,526 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-12 16:33:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:44,528 INFO L225 Difference]: With dead ends: 606 [2020-10-12 16:33:44,528 INFO L226 Difference]: Without dead ends: 585 [2020-10-12 16:33:44,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-12 16:33:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-10-12 16:33:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 528. [2020-10-12 16:33:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-12 16:33:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 624 transitions. [2020-10-12 16:33:44,580 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 624 transitions. Word has length 88 [2020-10-12 16:33:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:44,580 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 624 transitions. [2020-10-12 16:33:44,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:33:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 624 transitions. [2020-10-12 16:33:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 16:33:44,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:44,581 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] [2020-10-12 16:33:44,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 16:33:44,581 INFO L427 AbstractCegarLoop]: === Iteration 51 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash -71938752, now seen corresponding path program 1 times [2020-10-12 16:33:44,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:44,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943539230] [2020-10-12 16:33:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:33:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 16:33:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:33:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:33:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:44,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:44,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:44,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:44,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:33:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:33:44,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:33:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:44,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:33:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:33:44,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:33:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 16:33:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:44,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 16:33:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:33:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:45,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:33:45,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:33:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:45,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 16:33:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:33:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:33:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:33:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:33:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:45,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:33:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:33:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:33:45,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:33:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:33:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:33:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:33:45,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943539230] [2020-10-12 16:33:45,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:33:45,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:33:45,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139258834] [2020-10-12 16:33:45,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:33:45,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:33:45,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:33:45,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:33:45,110 INFO L87 Difference]: Start difference. First operand 528 states and 624 transitions. Second operand 14 states. [2020-10-12 16:33:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:33:47,223 INFO L93 Difference]: Finished difference Result 1087 states and 1273 transitions. [2020-10-12 16:33:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 16:33:47,223 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-12 16:33:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:33:47,226 INFO L225 Difference]: With dead ends: 1087 [2020-10-12 16:33:47,226 INFO L226 Difference]: Without dead ends: 758 [2020-10-12 16:33:47,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-12 16:33:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-12 16:33:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 653. [2020-10-12 16:33:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-10-12 16:33:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 761 transitions. [2020-10-12 16:33:47,288 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 761 transitions. Word has length 84 [2020-10-12 16:33:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:33:47,288 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 761 transitions. [2020-10-12 16:33:47,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:33:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 761 transitions. [2020-10-12 16:33:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 16:33:47,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:33:47,290 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] [2020-10-12 16:33:47,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 16:33:47,290 INFO L427 AbstractCegarLoop]: === Iteration 52 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:33:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:33:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1790671204, now seen corresponding path program 1 times [2020-10-12 16:33:47,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:33:47,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279276047] [2020-10-12 16:33:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:33:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 16:33:47,310 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 16:33:47,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 16:33:47,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 16:33:47,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:33:47 BoogieIcfgContainer [2020-10-12 16:33:47,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:33:47,346 INFO L168 Benchmark]: Toolchain (without parser) took 154084.26 ms. Allocated memory was 140.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 101.5 MB in the beginning and 721.2 MB in the end (delta: -619.7 MB). Peak memory consumption was 509.6 MB. Max. memory is 7.1 GB. [2020-10-12 16:33:47,347 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:33:47,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.80 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 101.3 MB in the beginning and 174.8 MB in the end (delta: -73.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:33:47,347 INFO L168 Benchmark]: Boogie Preprocessor took 102.60 ms. Allocated memory is still 207.1 MB. Free memory was 174.8 MB in the beginning and 170.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:33:47,348 INFO L168 Benchmark]: RCFGBuilder took 1281.70 ms. Allocated memory was 207.1 MB in the beginning and 239.1 MB in the end (delta: 32.0 MB). Free memory was 170.5 MB in the beginning and 167.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-10-12 16:33:47,348 INFO L168 Benchmark]: TraceAbstraction took 152010.18 ms. Allocated memory was 239.1 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 167.3 MB in the beginning and 721.2 MB in the end (delta: -553.9 MB). Peak memory consumption was 476.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:33:47,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.80 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 101.3 MB in the beginning and 174.8 MB in the end (delta: -73.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.60 ms. Allocated memory is still 207.1 MB. Free memory was 174.8 MB in the beginning and 170.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1281.70 ms. Allocated memory was 207.1 MB in the beginning and 239.1 MB in the end (delta: 32.0 MB). Free memory was 170.5 MB in the beginning and 167.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 152010.18 ms. Allocated memory was 239.1 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 167.3 MB in the beginning and 721.2 MB in the end (delta: -553.9 MB). Peak memory consumption was 476.9 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: 151.9s, OverallIterations: 52, TraceHistogramMax: 1, AutomataDifference: 104.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21743 SDtfs, 28618 SDslu, 41397 SDs, 0 SdLazy, 77247 SolverSat, 8504 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1125 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1289occurred 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, 51 MinimizatonAttempts, 4657 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 41.5s InterpolantComputationTime, 2834 NumberOfCodeBlocks, 2834 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2698 ConstructedInterpolants, 0 QuantifiedInterpolants, 741717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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...