/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:17:10,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:17:10,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:17:10,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:17:10,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:17:10,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:17:10,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:17:10,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:17:10,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:17:10,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:17:10,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:17:10,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:17:10,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:17:10,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:17:10,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:17:10,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:17:10,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:17:10,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:17:10,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:17:10,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:17:10,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:17:10,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:17:10,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:17:10,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:17:10,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:17:10,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:17:10,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:17:10,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:17:10,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:17:10,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:17:10,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:17:10,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:17:10,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:17:10,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:17:10,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:17:10,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:17:10,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:17:10,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:17:10,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:17:10,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:17:10,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:17:10,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 00:17:10,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:17:10,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:17:10,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:17:10,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:17:10,611 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:17:10,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:17:10,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:17:10,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:17:10,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:17:10,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:17:10,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:17:10,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:17:10,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:17:10,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:17:10,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:17:10,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:17:10,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:17:10,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:17:10,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:17:10,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:17:10,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:17:10,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:17:10,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:17:10,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:17:10,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:17:10,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:17:10,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:17:10,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:17:10,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:17:10,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:17:10,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:17:10,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:17:10,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:17:10,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:17:10,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:17:10,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-15 00:17:11,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2aa3664f/70b39a1cedc54a2eaaba0145d95e3aba/FLAGbb1f5d64c [2020-10-15 00:17:11,639 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:17:11,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-15 00:17:11,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2aa3664f/70b39a1cedc54a2eaaba0145d95e3aba/FLAGbb1f5d64c [2020-10-15 00:17:11,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2aa3664f/70b39a1cedc54a2eaaba0145d95e3aba [2020-10-15 00:17:11,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:17:11,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:17:11,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:17:11,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:17:11,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:17:11,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:17:11" (1/1) ... [2020-10-15 00:17:11,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4ad157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:11, skipping insertion in model container [2020-10-15 00:17:11,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:17:11" (1/1) ... [2020-10-15 00:17:11,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:17:11,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:17:12,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:17:12,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:17:12,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:17:12,662 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:17:12,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12 WrapperNode [2020-10-15 00:17:12,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:17:12,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:17:12,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:17:12,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:17:12,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... [2020-10-15 00:17:12,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:17:12,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:17:12,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:17:12,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:17:12,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:17:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-15 00:17:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-15 00:17:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-15 00:17:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-15 00:17:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-15 00:17:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:17:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-15 00:17:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-15 00:17:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-15 00:17:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-15 00:17:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-15 00:17:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-15 00:17:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-15 00:17:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-15 00:17:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-15 00:17:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-15 00:17:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-15 00:17:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-15 00:17:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-15 00:17:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2020-10-15 00:17:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2020-10-15 00:17:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2020-10-15 00:17:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2020-10-15 00:17:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-15 00:17:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:17:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-15 00:17:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-15 00:17:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-15 00:17:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-15 00:17:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-15 00:17:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-15 00:17:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-15 00:17:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-15 00:17:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-15 00:17:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-15 00:17:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-15 00:17:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-15 00:17:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-15 00:17:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-15 00:17:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-15 00:17:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-15 00:17:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-15 00:17:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:17:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-15 00:17:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:17:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:17:13,260 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,317 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:13,317 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:13,327 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,338 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:13,339 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:13,347 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,537 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-15 00:17:13,537 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-15 00:17:13,541 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,632 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-10-15 00:17:13,632 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-10-15 00:17:13,648 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,756 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-15 00:17:13,757 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-15 00:17:13,901 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,914 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:13,915 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:13,915 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,923 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:13,923 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:13,924 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:13,933 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:13,933 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:13,974 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:14,005 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-15 00:17:14,005 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-15 00:17:14,008 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:14,117 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2020-10-15 00:17:14,117 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2020-10-15 00:17:14,163 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:14,169 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:14,170 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:14,170 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:14,177 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:14,178 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:14,178 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:14,184 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:17:14,185 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:17:14,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:17:14,208 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:17:14,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:17:14 BoogieIcfgContainer [2020-10-15 00:17:14,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:17:14,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:17:14,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:17:14,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:17:14,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:17:11" (1/3) ... [2020-10-15 00:17:14,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df6a6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:17:14, skipping insertion in model container [2020-10-15 00:17:14,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:12" (2/3) ... [2020-10-15 00:17:14,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df6a6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:17:14, skipping insertion in model container [2020-10-15 00:17:14,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:17:14" (3/3) ... [2020-10-15 00:17:14,223 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2020-10-15 00:17:14,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:17:14,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:17:14,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:17:14,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:17:14,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:17:14,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:17:14,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:17:14,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:17:14,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:17:14,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:17:14,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:17:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2020-10-15 00:17:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:17:14,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:14,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:14,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:14,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1980583479, now seen corresponding path program 1 times [2020-10-15 00:17:14,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:14,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753245170] [2020-10-15 00:17:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:17:15,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:17:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-15 00:17:15,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:17:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:17:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:15,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:15,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:15,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:17:15,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:15,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:15,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:15,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753245170] [2020-10-15 00:17:15,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:15,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:17:15,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710313824] [2020-10-15 00:17:15,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:17:15,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:15,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:17:15,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:17:15,712 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 5 states. [2020-10-15 00:17:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:17,767 INFO L93 Difference]: Finished difference Result 776 states and 1133 transitions. [2020-10-15 00:17:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:17,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:17:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:17,794 INFO L225 Difference]: With dead ends: 776 [2020-10-15 00:17:17,794 INFO L226 Difference]: Without dead ends: 528 [2020-10-15 00:17:17,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-15 00:17:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 466. [2020-10-15 00:17:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-15 00:17:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 636 transitions. [2020-10-15 00:17:17,923 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 636 transitions. Word has length 20 [2020-10-15 00:17:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:17,923 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 636 transitions. [2020-10-15 00:17:17,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:17:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 636 transitions. [2020-10-15 00:17:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:17:17,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:17,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:17,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:17:17,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:17,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1966238570, now seen corresponding path program 1 times [2020-10-15 00:17:17,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:17,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281952210] [2020-10-15 00:17:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:17,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:17:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-15 00:17:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:17:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:17:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:18,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 00:17:18,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 00:17:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:18,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281952210] [2020-10-15 00:17:18,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:18,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:17:18,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645207966] [2020-10-15 00:17:18,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:17:18,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:18,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:17:18,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:17:18,315 INFO L87 Difference]: Start difference. First operand 466 states and 636 transitions. Second operand 5 states. [2020-10-15 00:17:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:19,996 INFO L93 Difference]: Finished difference Result 530 states and 724 transitions. [2020-10-15 00:17:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:17:19,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:17:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:20,012 INFO L225 Difference]: With dead ends: 530 [2020-10-15 00:17:20,012 INFO L226 Difference]: Without dead ends: 514 [2020-10-15 00:17:20,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:17:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-15 00:17:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 466. [2020-10-15 00:17:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-15 00:17:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 635 transitions. [2020-10-15 00:17:20,107 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 635 transitions. Word has length 20 [2020-10-15 00:17:20,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:20,107 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 635 transitions. [2020-10-15 00:17:20,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:17:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 635 transitions. [2020-10-15 00:17:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:17:20,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:20,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:20,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:17:20,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1877533292, now seen corresponding path program 1 times [2020-10-15 00:17:20,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:20,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192318917] [2020-10-15 00:17:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:20,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:17:20,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-15 00:17:20,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:20,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:17:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:20,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:20,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:20,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:20,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:20,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:20,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:20,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:20,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:20,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:20,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:20,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192318917] [2020-10-15 00:17:20,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:20,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:20,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927814916] [2020-10-15 00:17:20,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:20,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:20,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:20,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:20,578 INFO L87 Difference]: Start difference. First operand 466 states and 635 transitions. Second operand 6 states. [2020-10-15 00:17:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:22,877 INFO L93 Difference]: Finished difference Result 866 states and 1175 transitions. [2020-10-15 00:17:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:22,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-15 00:17:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:22,885 INFO L225 Difference]: With dead ends: 866 [2020-10-15 00:17:22,885 INFO L226 Difference]: Without dead ends: 695 [2020-10-15 00:17:22,886 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 [2020-10-15 00:17:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-15 00:17:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 593. [2020-10-15 00:17:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-15 00:17:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 806 transitions. [2020-10-15 00:17:22,944 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 806 transitions. Word has length 25 [2020-10-15 00:17:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:22,944 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 806 transitions. [2020-10-15 00:17:22,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 806 transitions. [2020-10-15 00:17:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:17:22,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:22,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:22,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:17:22,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2127650726, now seen corresponding path program 1 times [2020-10-15 00:17:22,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:22,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068458092] [2020-10-15 00:17:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:17:24,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-15 00:17:24,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:17:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:17:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:17:24,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:17:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:24,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:24,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:24,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068458092] [2020-10-15 00:17:24,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:24,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:17:24,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441532069] [2020-10-15 00:17:24,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:17:24,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:24,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:17:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:24,266 INFO L87 Difference]: Start difference. First operand 593 states and 806 transitions. Second operand 7 states. [2020-10-15 00:17:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:27,284 INFO L93 Difference]: Finished difference Result 1542 states and 2049 transitions. [2020-10-15 00:17:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:27,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-15 00:17:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:27,296 INFO L225 Difference]: With dead ends: 1542 [2020-10-15 00:17:27,296 INFO L226 Difference]: Without dead ends: 1036 [2020-10-15 00:17:27,300 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 [2020-10-15 00:17:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-10-15 00:17:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 826. [2020-10-15 00:17:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-15 00:17:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1095 transitions. [2020-10-15 00:17:27,408 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1095 transitions. Word has length 31 [2020-10-15 00:17:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:27,409 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 1095 transitions. [2020-10-15 00:17:27,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:17:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1095 transitions. [2020-10-15 00:17:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:17:27,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:27,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:27,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:17:27,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:27,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2129497768, now seen corresponding path program 1 times [2020-10-15 00:17:27,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:27,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041084616] [2020-10-15 00:17:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:17:27,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-15 00:17:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:17:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:17:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:27,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:27,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:27,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041084616] [2020-10-15 00:17:27,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:27,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:27,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941296141] [2020-10-15 00:17:27,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:27,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:27,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:27,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:27,969 INFO L87 Difference]: Start difference. First operand 826 states and 1095 transitions. Second operand 6 states. [2020-10-15 00:17:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:29,689 INFO L93 Difference]: Finished difference Result 943 states and 1252 transitions. [2020-10-15 00:17:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:29,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-15 00:17:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:29,697 INFO L225 Difference]: With dead ends: 943 [2020-10-15 00:17:29,697 INFO L226 Difference]: Without dead ends: 939 [2020-10-15 00:17:29,699 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 [2020-10-15 00:17:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-10-15 00:17:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 824. [2020-10-15 00:17:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-10-15 00:17:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1089 transitions. [2020-10-15 00:17:29,788 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1089 transitions. Word has length 31 [2020-10-15 00:17:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:29,788 INFO L479 AbstractCegarLoop]: Abstraction has 824 states and 1089 transitions. [2020-10-15 00:17:29,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1089 transitions. [2020-10-15 00:17:29,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 00:17:29,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:29,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:29,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:17:29,796 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash -591734042, now seen corresponding path program 1 times [2020-10-15 00:17:29,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:29,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274293642] [2020-10-15 00:17:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:17:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-15 00:17:30,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:17:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:17:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:30,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:30,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:30,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:30,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:30,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274293642] [2020-10-15 00:17:30,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:30,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:30,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550326251] [2020-10-15 00:17:30,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:30,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:30,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:30,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:30,301 INFO L87 Difference]: Start difference. First operand 824 states and 1089 transitions. Second operand 6 states. [2020-10-15 00:17:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:32,065 INFO L93 Difference]: Finished difference Result 1443 states and 1909 transitions. [2020-10-15 00:17:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:32,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-15 00:17:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:32,076 INFO L225 Difference]: With dead ends: 1443 [2020-10-15 00:17:32,076 INFO L226 Difference]: Without dead ends: 1041 [2020-10-15 00:17:32,079 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 [2020-10-15 00:17:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-15 00:17:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 967. [2020-10-15 00:17:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-10-15 00:17:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1292 transitions. [2020-10-15 00:17:32,266 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1292 transitions. Word has length 33 [2020-10-15 00:17:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:32,267 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1292 transitions. [2020-10-15 00:17:32,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:32,268 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1292 transitions. [2020-10-15 00:17:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:17:32,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:32,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:32,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:17:32,271 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1251517402, now seen corresponding path program 1 times [2020-10-15 00:17:32,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:32,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174893405] [2020-10-15 00:17:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:17:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-15 00:17:32,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 00:17:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:17:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:32,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:32,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:32,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:32,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:32,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:32,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:32,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:32,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174893405] [2020-10-15 00:17:32,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:32,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:32,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668846021] [2020-10-15 00:17:32,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:32,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:32,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:32,648 INFO L87 Difference]: Start difference. First operand 967 states and 1292 transitions. Second operand 8 states. [2020-10-15 00:17:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:34,049 INFO L93 Difference]: Finished difference Result 1105 states and 1461 transitions. [2020-10-15 00:17:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:17:34,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-15 00:17:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:34,060 INFO L225 Difference]: With dead ends: 1105 [2020-10-15 00:17:34,060 INFO L226 Difference]: Without dead ends: 1100 [2020-10-15 00:17:34,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-15 00:17:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1018. [2020-10-15 00:17:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-15 00:17:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1352 transitions. [2020-10-15 00:17:34,227 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1352 transitions. Word has length 38 [2020-10-15 00:17:34,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:34,227 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1352 transitions. [2020-10-15 00:17:34,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1352 transitions. [2020-10-15 00:17:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:17:34,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:34,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:34,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:17:34,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:34,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1679216250, now seen corresponding path program 1 times [2020-10-15 00:17:34,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:34,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681586789] [2020-10-15 00:17:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:17:34,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-15 00:17:34,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-15 00:17:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:17:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:34,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:34,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:34,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:34,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681586789] [2020-10-15 00:17:34,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:34,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:34,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057327493] [2020-10-15 00:17:34,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:34,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:34,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:34,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:34,759 INFO L87 Difference]: Start difference. First operand 1018 states and 1352 transitions. Second operand 6 states. [2020-10-15 00:17:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:36,520 INFO L93 Difference]: Finished difference Result 1078 states and 1425 transitions. [2020-10-15 00:17:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:36,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-15 00:17:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:36,529 INFO L225 Difference]: With dead ends: 1078 [2020-10-15 00:17:36,529 INFO L226 Difference]: Without dead ends: 1075 [2020-10-15 00:17:36,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2020-10-15 00:17:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1029. [2020-10-15 00:17:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-15 00:17:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2020-10-15 00:17:36,659 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 38 [2020-10-15 00:17:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:36,660 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2020-10-15 00:17:36,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2020-10-15 00:17:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:17:36,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:36,662 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] [2020-10-15 00:17:36,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:17:36,663 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:36,663 INFO L82 PathProgramCache]: Analyzing trace with hash 310268416, now seen corresponding path program 1 times [2020-10-15 00:17:36,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:36,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847650127] [2020-10-15 00:17:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:37,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:17:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-15 00:17:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:37,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:17:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:37,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:17:37,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:37,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:37,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:37,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:37,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:17:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:37,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:37,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:37,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:37,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:37,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:37,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:17:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:37,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:17:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:37,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:37,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847650127] [2020-10-15 00:17:37,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:37,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:37,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327437038] [2020-10-15 00:17:37,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:37,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:37,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:37,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:37,293 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 transitions. Second operand 9 states. [2020-10-15 00:17:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:40,401 INFO L93 Difference]: Finished difference Result 1398 states and 1864 transitions. [2020-10-15 00:17:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:17:40,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-15 00:17:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:40,410 INFO L225 Difference]: With dead ends: 1398 [2020-10-15 00:17:40,410 INFO L226 Difference]: Without dead ends: 1387 [2020-10-15 00:17:40,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:17:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-10-15 00:17:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1165. [2020-10-15 00:17:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-15 00:17:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1541 transitions. [2020-10-15 00:17:40,513 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1541 transitions. Word has length 39 [2020-10-15 00:17:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:40,513 INFO L479 AbstractCegarLoop]: Abstraction has 1165 states and 1541 transitions. [2020-10-15 00:17:40,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1541 transitions. [2020-10-15 00:17:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:17:40,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:40,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:40,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:17:40,516 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1029103729, now seen corresponding path program 1 times [2020-10-15 00:17:40,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:40,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685558263] [2020-10-15 00:17:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:17:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-15 00:17:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:40,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:17:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:41,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:41,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:41,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:41,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:41,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:17:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:41,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:41,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:17:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 00:17:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:17:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:41,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:41,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 49 [2020-10-15 00:17:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:41,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685558263] [2020-10-15 00:17:41,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:41,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:41,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430953560] [2020-10-15 00:17:41,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:41,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:41,256 INFO L87 Difference]: Start difference. First operand 1165 states and 1541 transitions. Second operand 10 states. [2020-10-15 00:17:42,406 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-15 00:17:43,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:43,426 INFO L93 Difference]: Finished difference Result 1256 states and 1652 transitions. [2020-10-15 00:17:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:43,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-15 00:17:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:43,434 INFO L225 Difference]: With dead ends: 1256 [2020-10-15 00:17:43,434 INFO L226 Difference]: Without dead ends: 1247 [2020-10-15 00:17:43,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:17:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2020-10-15 00:17:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1165. [2020-10-15 00:17:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-15 00:17:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1539 transitions. [2020-10-15 00:17:43,532 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1539 transitions. Word has length 41 [2020-10-15 00:17:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:43,532 INFO L479 AbstractCegarLoop]: Abstraction has 1165 states and 1539 transitions. [2020-10-15 00:17:43,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1539 transitions. [2020-10-15 00:17:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:17:43,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:43,534 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] [2020-10-15 00:17:43,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:17:43,534 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 73131497, now seen corresponding path program 1 times [2020-10-15 00:17:43,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:43,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283985308] [2020-10-15 00:17:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:17:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-15 00:17:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:43,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:43,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:43,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:43,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:43,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283985308] [2020-10-15 00:17:43,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:43,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:43,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384977305] [2020-10-15 00:17:43,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:43,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:43,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:43,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:43,890 INFO L87 Difference]: Start difference. First operand 1165 states and 1539 transitions. Second operand 10 states. [2020-10-15 00:17:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:45,818 INFO L93 Difference]: Finished difference Result 1256 states and 1650 transitions. [2020-10-15 00:17:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:45,819 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-15 00:17:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:45,829 INFO L225 Difference]: With dead ends: 1256 [2020-10-15 00:17:45,829 INFO L226 Difference]: Without dead ends: 1241 [2020-10-15 00:17:45,832 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 [2020-10-15 00:17:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-10-15 00:17:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1163. [2020-10-15 00:17:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2020-10-15 00:17:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1535 transitions. [2020-10-15 00:17:45,927 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1535 transitions. Word has length 41 [2020-10-15 00:17:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:45,927 INFO L479 AbstractCegarLoop]: Abstraction has 1163 states and 1535 transitions. [2020-10-15 00:17:45,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1535 transitions. [2020-10-15 00:17:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:17:45,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:45,929 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] [2020-10-15 00:17:45,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:17:45,929 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1782528564, now seen corresponding path program 1 times [2020-10-15 00:17:45,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:45,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569875403] [2020-10-15 00:17:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:17:46,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-15 00:17:46,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 00:17:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:46,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:46,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:46,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:46,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:46,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:46,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:46,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:17:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:46,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569875403] [2020-10-15 00:17:46,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:46,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:46,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916724602] [2020-10-15 00:17:46,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:46,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:46,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:46,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:46,292 INFO L87 Difference]: Start difference. First operand 1163 states and 1535 transitions. Second operand 10 states. [2020-10-15 00:17:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:47,985 INFO L93 Difference]: Finished difference Result 1254 states and 1646 transitions. [2020-10-15 00:17:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:47,986 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-15 00:17:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:47,993 INFO L225 Difference]: With dead ends: 1254 [2020-10-15 00:17:47,994 INFO L226 Difference]: Without dead ends: 1234 [2020-10-15 00:17:47,995 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 [2020-10-15 00:17:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2020-10-15 00:17:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1156. [2020-10-15 00:17:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-10-15 00:17:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1526 transitions. [2020-10-15 00:17:48,097 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1526 transitions. Word has length 42 [2020-10-15 00:17:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:48,097 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1526 transitions. [2020-10-15 00:17:48,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1526 transitions. [2020-10-15 00:17:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:17:48,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:48,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:48,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:17:48,099 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1663847294, now seen corresponding path program 1 times [2020-10-15 00:17:48,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:48,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222102853] [2020-10-15 00:17:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:17:48,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-15 00:17:48,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:17:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:48,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:48,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:49,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:49,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:17:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:49,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222102853] [2020-10-15 00:17:49,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:49,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:49,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329416085] [2020-10-15 00:17:49,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:49,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:49,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:49,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:49,054 INFO L87 Difference]: Start difference. First operand 1156 states and 1526 transitions. Second operand 10 states. [2020-10-15 00:17:49,329 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-15 00:17:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:53,392 INFO L93 Difference]: Finished difference Result 2141 states and 2815 transitions. [2020-10-15 00:17:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:53,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-15 00:17:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:53,404 INFO L225 Difference]: With dead ends: 2141 [2020-10-15 00:17:53,404 INFO L226 Difference]: Without dead ends: 1519 [2020-10-15 00:17:53,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:17:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-15 00:17:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1217. [2020-10-15 00:17:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-10-15 00:17:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1596 transitions. [2020-10-15 00:17:53,598 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1596 transitions. Word has length 44 [2020-10-15 00:17:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:53,599 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1596 transitions. [2020-10-15 00:17:53,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1596 transitions. [2020-10-15 00:17:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:17:53,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:53,601 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] [2020-10-15 00:17:53,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:17:53,602 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:53,603 INFO L82 PathProgramCache]: Analyzing trace with hash -319659871, now seen corresponding path program 1 times [2020-10-15 00:17:53,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:53,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512641556] [2020-10-15 00:17:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:53,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:17:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-15 00:17:53,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:53,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 00:17:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:53,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:53,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:53,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:53,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:53,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:54,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:54,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-15 00:17:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 00:17:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:54,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512641556] [2020-10-15 00:17:54,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:54,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:54,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709251294] [2020-10-15 00:17:54,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:54,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:54,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:54,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:54,201 INFO L87 Difference]: Start difference. First operand 1217 states and 1596 transitions. Second operand 8 states. [2020-10-15 00:17:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:56,873 INFO L93 Difference]: Finished difference Result 1292 states and 1684 transitions. [2020-10-15 00:17:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:17:56,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-15 00:17:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:56,882 INFO L225 Difference]: With dead ends: 1292 [2020-10-15 00:17:56,882 INFO L226 Difference]: Without dead ends: 1268 [2020-10-15 00:17:56,883 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 [2020-10-15 00:17:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-10-15 00:17:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1219. [2020-10-15 00:17:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-10-15 00:17:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1598 transitions. [2020-10-15 00:17:57,024 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1598 transitions. Word has length 42 [2020-10-15 00:17:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:57,026 INFO L479 AbstractCegarLoop]: Abstraction has 1219 states and 1598 transitions. [2020-10-15 00:17:57,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1598 transitions. [2020-10-15 00:17:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:17:57,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:57,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:57,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:17:57,029 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash -209494515, now seen corresponding path program 1 times [2020-10-15 00:17:57,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:57,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893213873] [2020-10-15 00:17:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:17:57,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-15 00:17:57,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:57,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:57,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:57,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:17:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:17:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 00:17:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:57,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893213873] [2020-10-15 00:17:57,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:57,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:57,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322542954] [2020-10-15 00:17:57,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:57,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:57,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:57,402 INFO L87 Difference]: Start difference. First operand 1219 states and 1598 transitions. Second operand 8 states. [2020-10-15 00:17:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:59,368 INFO L93 Difference]: Finished difference Result 1289 states and 1680 transitions. [2020-10-15 00:17:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:17:59,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-15 00:17:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:59,376 INFO L225 Difference]: With dead ends: 1289 [2020-10-15 00:17:59,376 INFO L226 Difference]: Without dead ends: 1265 [2020-10-15 00:17:59,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-15 00:17:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1219. [2020-10-15 00:17:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-10-15 00:17:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1598 transitions. [2020-10-15 00:17:59,483 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1598 transitions. Word has length 43 [2020-10-15 00:17:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:59,484 INFO L479 AbstractCegarLoop]: Abstraction has 1219 states and 1598 transitions. [2020-10-15 00:17:59,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1598 transitions. [2020-10-15 00:17:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:17:59,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:59,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:59,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:17:59,486 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:59,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:59,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1512549362, now seen corresponding path program 1 times [2020-10-15 00:17:59,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:59,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449761941] [2020-10-15 00:17:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:17:59,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-15 00:17:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 00:17:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:59,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:59,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:17:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:17:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:17:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:59,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449761941] [2020-10-15 00:17:59,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:59,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:59,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061135866] [2020-10-15 00:17:59,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:59,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:59,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:59,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:59,962 INFO L87 Difference]: Start difference. First operand 1219 states and 1598 transitions. Second operand 10 states. [2020-10-15 00:18:01,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:01,502 INFO L93 Difference]: Finished difference Result 1294 states and 1687 transitions. [2020-10-15 00:18:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:18:01,503 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-15 00:18:01,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:01,509 INFO L225 Difference]: With dead ends: 1294 [2020-10-15 00:18:01,509 INFO L226 Difference]: Without dead ends: 1276 [2020-10-15 00:18:01,510 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 [2020-10-15 00:18:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-10-15 00:18:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1217. [2020-10-15 00:18:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-10-15 00:18:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1594 transitions. [2020-10-15 00:18:01,641 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1594 transitions. Word has length 45 [2020-10-15 00:18:01,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:01,642 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1594 transitions. [2020-10-15 00:18:01,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:18:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1594 transitions. [2020-10-15 00:18:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:18:01,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:01,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:01,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:18:01,645 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1421115394, now seen corresponding path program 1 times [2020-10-15 00:18:01,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:01,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921224666] [2020-10-15 00:18:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:18:03,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:18:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-15 00:18:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:18:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:04,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:04,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:04,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:04,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:04,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:18:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 00:18:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:18:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:18:04,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:18:04,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:18:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:04,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921224666] [2020-10-15 00:18:04,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:04,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:04,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789738476] [2020-10-15 00:18:04,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:04,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:04,369 INFO L87 Difference]: Start difference. First operand 1217 states and 1594 transitions. Second operand 11 states. [2020-10-15 00:18:04,719 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-15 00:18:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:07,688 INFO L93 Difference]: Finished difference Result 1424 states and 1869 transitions. [2020-10-15 00:18:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:18:07,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-15 00:18:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:07,695 INFO L225 Difference]: With dead ends: 1424 [2020-10-15 00:18:07,695 INFO L226 Difference]: Without dead ends: 1415 [2020-10-15 00:18:07,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:18:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-10-15 00:18:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1268. [2020-10-15 00:18:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-10-15 00:18:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1648 transitions. [2020-10-15 00:18:07,829 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1648 transitions. Word has length 46 [2020-10-15 00:18:07,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:07,829 INFO L479 AbstractCegarLoop]: Abstraction has 1268 states and 1648 transitions. [2020-10-15 00:18:07,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:07,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1648 transitions. [2020-10-15 00:18:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:18:07,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:07,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:07,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:18:07,832 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:07,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1435460303, now seen corresponding path program 1 times [2020-10-15 00:18:07,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:07,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927333891] [2020-10-15 00:18:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:18:08,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-15 00:18:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:08,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:18:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:18:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:08,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:08,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:08,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:08,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:08,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:08,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:08,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:08,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:08,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:08,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:08,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:08,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:08,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:08,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:08,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:08,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:18:08,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:18:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:08,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:18:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:08,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:18:08,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:18:08,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:08,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:08,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927333891] [2020-10-15 00:18:08,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:08,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:18:08,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524646901] [2020-10-15 00:18:08,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:18:08,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:18:08,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:18:08,300 INFO L87 Difference]: Start difference. First operand 1268 states and 1648 transitions. Second operand 8 states. [2020-10-15 00:18:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:09,859 INFO L93 Difference]: Finished difference Result 1374 states and 1784 transitions. [2020-10-15 00:18:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:18:09,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-15 00:18:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:09,870 INFO L225 Difference]: With dead ends: 1374 [2020-10-15 00:18:09,870 INFO L226 Difference]: Without dead ends: 1305 [2020-10-15 00:18:09,871 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 [2020-10-15 00:18:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2020-10-15 00:18:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1233. [2020-10-15 00:18:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-10-15 00:18:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1597 transitions. [2020-10-15 00:18:09,978 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1597 transitions. Word has length 46 [2020-10-15 00:18:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:09,979 INFO L479 AbstractCegarLoop]: Abstraction has 1233 states and 1597 transitions. [2020-10-15 00:18:09,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:18:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1597 transitions. [2020-10-15 00:18:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:18:09,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:09,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:09,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:18:09,981 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:09,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1524135385, now seen corresponding path program 1 times [2020-10-15 00:18:09,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:09,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384927498] [2020-10-15 00:18:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:18:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-15 00:18:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:18:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:10,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:10,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:18:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:18:10,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 00:18:10,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:18:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:10,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:10,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384927498] [2020-10-15 00:18:10,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:10,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:18:10,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505883597] [2020-10-15 00:18:10,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:18:10,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:18:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:18:10,360 INFO L87 Difference]: Start difference. First operand 1233 states and 1597 transitions. Second operand 10 states. [2020-10-15 00:18:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:12,048 INFO L93 Difference]: Finished difference Result 1322 states and 1706 transitions. [2020-10-15 00:18:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:18:12,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-15 00:18:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:12,055 INFO L225 Difference]: With dead ends: 1322 [2020-10-15 00:18:12,055 INFO L226 Difference]: Without dead ends: 1304 [2020-10-15 00:18:12,056 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 [2020-10-15 00:18:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-10-15 00:18:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1231. [2020-10-15 00:18:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-10-15 00:18:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1593 transitions. [2020-10-15 00:18:12,162 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1593 transitions. Word has length 47 [2020-10-15 00:18:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:12,162 INFO L479 AbstractCegarLoop]: Abstraction has 1231 states and 1593 transitions. [2020-10-15 00:18:12,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:18:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1593 transitions. [2020-10-15 00:18:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:18:12,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:12,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:12,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:18:12,164 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1425041063, now seen corresponding path program 1 times [2020-10-15 00:18:12,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:12,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982501299] [2020-10-15 00:18:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:18:13,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:18:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-10-15 00:18:13,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:18:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:13,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:13,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:13,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:13,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:13,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:13,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:14,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:14,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:18:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:18:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:14,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982501299] [2020-10-15 00:18:14,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:14,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:18:14,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93434692] [2020-10-15 00:18:14,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:18:14,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:18:14,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:18:14,097 INFO L87 Difference]: Start difference. First operand 1231 states and 1593 transitions. Second operand 10 states. [2020-10-15 00:18:15,553 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-15 00:18:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:17,205 INFO L93 Difference]: Finished difference Result 2200 states and 2897 transitions. [2020-10-15 00:18:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:17,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-15 00:18:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:17,214 INFO L225 Difference]: With dead ends: 2200 [2020-10-15 00:18:17,214 INFO L226 Difference]: Without dead ends: 1615 [2020-10-15 00:18:17,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:18:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2020-10-15 00:18:17,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1368. [2020-10-15 00:18:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2020-10-15 00:18:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1772 transitions. [2020-10-15 00:18:17,345 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1772 transitions. Word has length 52 [2020-10-15 00:18:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:17,346 INFO L479 AbstractCegarLoop]: Abstraction has 1368 states and 1772 transitions. [2020-10-15 00:18:17,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:18:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1772 transitions. [2020-10-15 00:18:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:18:17,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:17,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:17,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:18:17,350 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash -489978371, now seen corresponding path program 1 times [2020-10-15 00:18:17,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:17,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540341389] [2020-10-15 00:18:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:18:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-15 00:18:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 00:18:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:17,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:17,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:18,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:18,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:18,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:18,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:18:18,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:18:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:18:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:18,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:18,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:18,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:18,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:18,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:18,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:18,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540341389] [2020-10-15 00:18:18,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:18,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:18,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360541639] [2020-10-15 00:18:18,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:18,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:18,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:18,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:18,220 INFO L87 Difference]: Start difference. First operand 1368 states and 1772 transitions. Second operand 11 states. [2020-10-15 00:18:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:20,620 INFO L93 Difference]: Finished difference Result 1461 states and 1886 transitions. [2020-10-15 00:18:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:20,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-15 00:18:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:20,627 INFO L225 Difference]: With dead ends: 1461 [2020-10-15 00:18:20,627 INFO L226 Difference]: Without dead ends: 1441 [2020-10-15 00:18:20,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2020-10-15 00:18:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1368. [2020-10-15 00:18:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2020-10-15 00:18:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1763 transitions. [2020-10-15 00:18:20,749 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1763 transitions. Word has length 50 [2020-10-15 00:18:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:20,749 INFO L479 AbstractCegarLoop]: Abstraction has 1368 states and 1763 transitions. [2020-10-15 00:18:20,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1763 transitions. [2020-10-15 00:18:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:18:20,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:20,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:20,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:18:20,754 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:20,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1880409685, now seen corresponding path program 1 times [2020-10-15 00:18:20,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:20,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463596482] [2020-10-15 00:18:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:21,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:21,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:18:21,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-15 00:18:21,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:21,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:18:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:21,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:21,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:21,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:21,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:21,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:21,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:21,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:21,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:18:21,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:18:21,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:21,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:18:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:18:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:21,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:21,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:21,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:21,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:21,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:21,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:21,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463596482] [2020-10-15 00:18:21,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:21,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:21,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150668776] [2020-10-15 00:18:21,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:21,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:21,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:21,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:21,407 INFO L87 Difference]: Start difference. First operand 1368 states and 1763 transitions. Second operand 11 states. [2020-10-15 00:18:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:22,988 INFO L93 Difference]: Finished difference Result 1461 states and 1877 transitions. [2020-10-15 00:18:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:22,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-15 00:18:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:22,996 INFO L225 Difference]: With dead ends: 1461 [2020-10-15 00:18:22,996 INFO L226 Difference]: Without dead ends: 1441 [2020-10-15 00:18:22,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2020-10-15 00:18:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1368. [2020-10-15 00:18:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2020-10-15 00:18:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1760 transitions. [2020-10-15 00:18:23,100 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1760 transitions. Word has length 51 [2020-10-15 00:18:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:23,101 INFO L479 AbstractCegarLoop]: Abstraction has 1368 states and 1760 transitions. [2020-10-15 00:18:23,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1760 transitions. [2020-10-15 00:18:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:18:23,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:23,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:23,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:18:23,103 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2014423191, now seen corresponding path program 1 times [2020-10-15 00:18:23,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:23,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575245325] [2020-10-15 00:18:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:23,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:18:23,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-15 00:18:23,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:23,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:23,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:18:23,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:23,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:23,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:23,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:23,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:23,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:23,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:23,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:23,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:23,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:23,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:23,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:18:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:23,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:23,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:23,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:23,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:23,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:23,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:23,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:18:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 00:18:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:23,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:18:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:18:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:23,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:23,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:23,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575245325] [2020-10-15 00:18:23,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:23,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:23,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002103731] [2020-10-15 00:18:23,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:23,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:23,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:23,985 INFO L87 Difference]: Start difference. First operand 1368 states and 1760 transitions. Second operand 11 states. [2020-10-15 00:18:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:25,764 INFO L93 Difference]: Finished difference Result 1461 states and 1874 transitions. [2020-10-15 00:18:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:25,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-15 00:18:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:25,772 INFO L225 Difference]: With dead ends: 1461 [2020-10-15 00:18:25,772 INFO L226 Difference]: Without dead ends: 1435 [2020-10-15 00:18:25,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2020-10-15 00:18:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1362. [2020-10-15 00:18:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2020-10-15 00:18:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1751 transitions. [2020-10-15 00:18:25,877 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1751 transitions. Word has length 51 [2020-10-15 00:18:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:25,878 INFO L479 AbstractCegarLoop]: Abstraction has 1362 states and 1751 transitions. [2020-10-15 00:18:25,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1751 transitions. [2020-10-15 00:18:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:18:25,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:25,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:25,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:18:25,881 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1090292134, now seen corresponding path program 1 times [2020-10-15 00:18:25,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:25,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068741778] [2020-10-15 00:18:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:18:26,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-15 00:18:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:18:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:26,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:18:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 00:18:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:18:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:26,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068741778] [2020-10-15 00:18:26,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:26,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:26,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230606200] [2020-10-15 00:18:26,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:26,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:26,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:26,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:26,365 INFO L87 Difference]: Start difference. First operand 1362 states and 1751 transitions. Second operand 11 states. [2020-10-15 00:18:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:28,425 INFO L93 Difference]: Finished difference Result 1445 states and 1851 transitions. [2020-10-15 00:18:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:18:28,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-15 00:18:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:28,432 INFO L225 Difference]: With dead ends: 1445 [2020-10-15 00:18:28,432 INFO L226 Difference]: Without dead ends: 1423 [2020-10-15 00:18:28,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-10-15 00:18:28,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1363. [2020-10-15 00:18:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-10-15 00:18:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1752 transitions. [2020-10-15 00:18:28,556 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1752 transitions. Word has length 51 [2020-10-15 00:18:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:28,556 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1752 transitions. [2020-10-15 00:18:28,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1752 transitions. [2020-10-15 00:18:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:18:28,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:28,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:28,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:18:28,560 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1208522397, now seen corresponding path program 1 times [2020-10-15 00:18:28,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:28,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46361188] [2020-10-15 00:18:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:18:29,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-15 00:18:29,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:18:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:29,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:29,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:29,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:29,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:29,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:29,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:29,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:29,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:29,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:29,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:29,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:29,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:29,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:29,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:18:29,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 00:18:29,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:29,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:18:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:29,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:29,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:29,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:29,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:18:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:29,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46361188] [2020-10-15 00:18:29,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:29,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:29,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666221125] [2020-10-15 00:18:29,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:29,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:29,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:29,735 INFO L87 Difference]: Start difference. First operand 1363 states and 1752 transitions. Second operand 11 states. [2020-10-15 00:18:31,169 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 00:18:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:32,959 INFO L93 Difference]: Finished difference Result 1603 states and 2071 transitions. [2020-10-15 00:18:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:18:32,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-15 00:18:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:32,966 INFO L225 Difference]: With dead ends: 1603 [2020-10-15 00:18:32,967 INFO L226 Difference]: Without dead ends: 1594 [2020-10-15 00:18:32,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-10-15 00:18:33,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1363. [2020-10-15 00:18:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-10-15 00:18:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1750 transitions. [2020-10-15 00:18:33,057 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1750 transitions. Word has length 51 [2020-10-15 00:18:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:33,057 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1750 transitions. [2020-10-15 00:18:33,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1750 transitions. [2020-10-15 00:18:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:18:33,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:33,060 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] [2020-10-15 00:18:33,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:18:33,060 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1357637008, now seen corresponding path program 1 times [2020-10-15 00:18:33,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:33,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763648115] [2020-10-15 00:18:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:33,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:18:33,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:18:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:33,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:18:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:18:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:33,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:33,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:33,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:33,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:33,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:33,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:33,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:33,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:33,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:33,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:18:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:18:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:18:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:33,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763648115] [2020-10-15 00:18:33,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:33,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:18:33,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249602912] [2020-10-15 00:18:33,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:18:33,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:33,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:18:33,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:18:33,351 INFO L87 Difference]: Start difference. First operand 1363 states and 1750 transitions. Second operand 8 states. [2020-10-15 00:18:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:35,001 INFO L93 Difference]: Finished difference Result 1522 states and 1918 transitions. [2020-10-15 00:18:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:18:35,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-15 00:18:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:35,006 INFO L225 Difference]: With dead ends: 1522 [2020-10-15 00:18:35,006 INFO L226 Difference]: Without dead ends: 1115 [2020-10-15 00:18:35,008 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 [2020-10-15 00:18:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2020-10-15 00:18:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1033. [2020-10-15 00:18:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1033 states. [2020-10-15 00:18:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1284 transitions. [2020-10-15 00:18:35,079 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1284 transitions. Word has length 53 [2020-10-15 00:18:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:35,079 INFO L479 AbstractCegarLoop]: Abstraction has 1033 states and 1284 transitions. [2020-10-15 00:18:35,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:18:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1284 transitions. [2020-10-15 00:18:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:18:35,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:35,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:35,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:18:35,081 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:35,081 INFO L82 PathProgramCache]: Analyzing trace with hash 292955083, now seen corresponding path program 1 times [2020-10-15 00:18:35,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:35,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732859846] [2020-10-15 00:18:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:18:35,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-15 00:18:35,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:35,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:18:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:35,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:35,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:35,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:35,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:35,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:35,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:35,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:35,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:35,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:35,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:35,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:35,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:35,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:35,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:35,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:35,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:18:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:35,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:35,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732859846] [2020-10-15 00:18:35,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:35,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:18:35,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657727014] [2020-10-15 00:18:35,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:18:35,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:18:35,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:18:35,846 INFO L87 Difference]: Start difference. First operand 1033 states and 1284 transitions. Second operand 13 states. [2020-10-15 00:18:35,995 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-15 00:18:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:38,608 INFO L93 Difference]: Finished difference Result 1301 states and 1629 transitions. [2020-10-15 00:18:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:18:38,609 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-15 00:18:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:38,614 INFO L225 Difference]: With dead ends: 1301 [2020-10-15 00:18:38,614 INFO L226 Difference]: Without dead ends: 1212 [2020-10-15 00:18:38,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:18:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-15 00:18:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 993. [2020-10-15 00:18:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-10-15 00:18:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1238 transitions. [2020-10-15 00:18:38,692 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1238 transitions. Word has length 52 [2020-10-15 00:18:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:38,692 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1238 transitions. [2020-10-15 00:18:38,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:18:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1238 transitions. [2020-10-15 00:18:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:18:38,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:38,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:38,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:18:38,694 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:38,695 INFO L82 PathProgramCache]: Analyzing trace with hash -581698746, now seen corresponding path program 1 times [2020-10-15 00:18:38,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:38,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21377691] [2020-10-15 00:18:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:18:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:18:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:18:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:18:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:38,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:38,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:38,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:38,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:38,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:38,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:18:38,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:38,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21377691] [2020-10-15 00:18:38,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:38,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:18:38,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242552161] [2020-10-15 00:18:38,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:18:38,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:18:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:18:38,987 INFO L87 Difference]: Start difference. First operand 993 states and 1238 transitions. Second operand 8 states. [2020-10-15 00:18:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:40,738 INFO L93 Difference]: Finished difference Result 1215 states and 1534 transitions. [2020-10-15 00:18:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:18:40,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 00:18:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:40,743 INFO L225 Difference]: With dead ends: 1215 [2020-10-15 00:18:40,743 INFO L226 Difference]: Without dead ends: 1202 [2020-10-15 00:18:40,744 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 [2020-10-15 00:18:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-10-15 00:18:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 990. [2020-10-15 00:18:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-15 00:18:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1231 transitions. [2020-10-15 00:18:40,812 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1231 transitions. Word has length 52 [2020-10-15 00:18:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:40,812 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1231 transitions. [2020-10-15 00:18:40,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:18:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1231 transitions. [2020-10-15 00:18:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:18:40,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:40,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:40,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:18:40,814 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:40,814 INFO L82 PathProgramCache]: Analyzing trace with hash 863369798, now seen corresponding path program 1 times [2020-10-15 00:18:40,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:40,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110299357] [2020-10-15 00:18:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:41,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:18:41,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:18:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:41,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:41,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:41,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:41,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:41,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:41,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:18:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-15 00:18:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:41,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:18:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:18:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:18:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:41,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110299357] [2020-10-15 00:18:41,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:41,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:18:41,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124747757] [2020-10-15 00:18:41,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:18:41,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:18:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:18:41,364 INFO L87 Difference]: Start difference. First operand 990 states and 1231 transitions. Second operand 12 states. [2020-10-15 00:18:41,517 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-15 00:18:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:43,827 INFO L93 Difference]: Finished difference Result 1100 states and 1361 transitions. [2020-10-15 00:18:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:43,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-15 00:18:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:43,832 INFO L225 Difference]: With dead ends: 1100 [2020-10-15 00:18:43,832 INFO L226 Difference]: Without dead ends: 946 [2020-10-15 00:18:43,833 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 [2020-10-15 00:18:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-15 00:18:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 862. [2020-10-15 00:18:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-15 00:18:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1066 transitions. [2020-10-15 00:18:43,926 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1066 transitions. Word has length 52 [2020-10-15 00:18:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:43,926 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 1066 transitions. [2020-10-15 00:18:43,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:18:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1066 transitions. [2020-10-15 00:18:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:18:43,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:43,928 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] [2020-10-15 00:18:43,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:18:43,929 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash -399912898, now seen corresponding path program 1 times [2020-10-15 00:18:43,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:43,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282745080] [2020-10-15 00:18:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:44,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:18:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:18:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:44,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:44,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:44,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:44,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:18:44,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:18:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:44,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:18:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:44,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:44,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:44,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:44,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:18:44,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:44,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:44,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282745080] [2020-10-15 00:18:44,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:44,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:18:44,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864302069] [2020-10-15 00:18:44,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:18:44,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:44,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:18:44,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:18:44,478 INFO L87 Difference]: Start difference. First operand 862 states and 1066 transitions. Second operand 13 states. [2020-10-15 00:18:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:46,662 INFO L93 Difference]: Finished difference Result 945 states and 1163 transitions. [2020-10-15 00:18:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:46,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-15 00:18:46,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:46,667 INFO L225 Difference]: With dead ends: 945 [2020-10-15 00:18:46,667 INFO L226 Difference]: Without dead ends: 927 [2020-10-15 00:18:46,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-15 00:18:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 858. [2020-10-15 00:18:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-15 00:18:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1060 transitions. [2020-10-15 00:18:46,731 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1060 transitions. Word has length 53 [2020-10-15 00:18:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:46,731 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1060 transitions. [2020-10-15 00:18:46,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:18:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1060 transitions. [2020-10-15 00:18:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:18:46,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:46,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:46,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:18:46,733 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -798022390, now seen corresponding path program 1 times [2020-10-15 00:18:46,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:46,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168344148] [2020-10-15 00:18:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:18:47,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-15 00:18:47,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 00:18:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:18:47,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:18:47,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:47,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:18:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:47,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:47,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:47,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-15 00:18:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:47,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:47,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:47,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:47,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:47,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:47,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:47,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:47,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168344148] [2020-10-15 00:18:47,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:47,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:18:47,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303268635] [2020-10-15 00:18:47,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:18:47,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:47,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:18:47,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:18:47,266 INFO L87 Difference]: Start difference. First operand 858 states and 1060 transitions. Second operand 8 states. [2020-10-15 00:18:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:48,921 INFO L93 Difference]: Finished difference Result 1261 states and 1574 transitions. [2020-10-15 00:18:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:18:48,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-15 00:18:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:48,926 INFO L225 Difference]: With dead ends: 1261 [2020-10-15 00:18:48,926 INFO L226 Difference]: Without dead ends: 937 [2020-10-15 00:18:48,928 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 [2020-10-15 00:18:48,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2020-10-15 00:18:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 863. [2020-10-15 00:18:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-15 00:18:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1067 transitions. [2020-10-15 00:18:49,029 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1067 transitions. Word has length 61 [2020-10-15 00:18:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:49,030 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1067 transitions. [2020-10-15 00:18:49,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:18:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1067 transitions. [2020-10-15 00:18:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:18:49,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:49,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:49,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:18:49,032 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1474588645, now seen corresponding path program 1 times [2020-10-15 00:18:49,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:49,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451397976] [2020-10-15 00:18:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:49,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:18:49,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-15 00:18:49,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:49,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 00:18:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:18:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:49,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:49,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:49,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:18:49,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:49,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:49,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:49,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:49,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:49,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:49,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:49,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:49,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:49,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:49,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:50,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:50,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:18:50,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-15 00:18:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:50,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:18:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:50,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:18:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:18:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:50,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:18:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:50,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:50,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:50,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:50,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:50,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451397976] [2020-10-15 00:18:50,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:50,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:50,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659287095] [2020-10-15 00:18:50,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:50,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:50,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:50,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:50,219 INFO L87 Difference]: Start difference. First operand 863 states and 1067 transitions. Second operand 14 states. [2020-10-15 00:18:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:52,258 INFO L93 Difference]: Finished difference Result 948 states and 1166 transitions. [2020-10-15 00:18:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:18:52,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-15 00:18:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:52,262 INFO L225 Difference]: With dead ends: 948 [2020-10-15 00:18:52,263 INFO L226 Difference]: Without dead ends: 920 [2020-10-15 00:18:52,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-10-15 00:18:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 851. [2020-10-15 00:18:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-10-15 00:18:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1053 transitions. [2020-10-15 00:18:52,408 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1053 transitions. Word has length 55 [2020-10-15 00:18:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:52,409 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1053 transitions. [2020-10-15 00:18:52,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1053 transitions. [2020-10-15 00:18:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:18:52,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:52,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:52,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:18:52,412 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:52,412 INFO L82 PathProgramCache]: Analyzing trace with hash -15936700, now seen corresponding path program 1 times [2020-10-15 00:18:52,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:52,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647310665] [2020-10-15 00:18:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 00:18:52,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 00:18:52,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-15 00:18:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:52,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:52,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:52,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:52,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:52,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:18:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:18:52,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:18:52,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:52,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:18:52,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:52,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:18:52,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:18:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:52,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:52,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:52,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:52,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:52,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:52,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647310665] [2020-10-15 00:18:52,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:52,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:18:52,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164205588] [2020-10-15 00:18:52,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:18:52,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:52,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:18:52,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:18:52,962 INFO L87 Difference]: Start difference. First operand 851 states and 1053 transitions. Second operand 10 states. [2020-10-15 00:18:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:54,681 INFO L93 Difference]: Finished difference Result 1204 states and 1502 transitions. [2020-10-15 00:18:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:18:54,682 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-15 00:18:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:54,685 INFO L225 Difference]: With dead ends: 1204 [2020-10-15 00:18:54,685 INFO L226 Difference]: Without dead ends: 875 [2020-10-15 00:18:54,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:18:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-10-15 00:18:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 809. [2020-10-15 00:18:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-10-15 00:18:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 994 transitions. [2020-10-15 00:18:54,792 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 994 transitions. Word has length 64 [2020-10-15 00:18:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:54,792 INFO L479 AbstractCegarLoop]: Abstraction has 809 states and 994 transitions. [2020-10-15 00:18:54,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:18:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 994 transitions. [2020-10-15 00:18:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:18:54,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:54,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:54,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:18:54,795 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1136965517, now seen corresponding path program 1 times [2020-10-15 00:18:54,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:54,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066058713] [2020-10-15 00:18:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:55,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:18:55,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-15 00:18:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:55,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 00:18:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:18:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:55,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:55,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:55,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:55,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:55,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:55,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:55,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:55,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:55,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:55,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:55,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:55,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:55,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:55,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:55,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:55,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:55,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:55,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:55,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:55,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:55,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:55,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:18:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:18:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 00:18:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:55,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:18:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:55,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:18:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:55,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:18:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:55,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:55,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066058713] [2020-10-15 00:18:55,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:55,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:18:55,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265614349] [2020-10-15 00:18:55,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:18:55,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:55,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:18:55,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:18:55,368 INFO L87 Difference]: Start difference. First operand 809 states and 994 transitions. Second operand 13 states. [2020-10-15 00:18:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:57,204 INFO L93 Difference]: Finished difference Result 884 states and 1082 transitions. [2020-10-15 00:18:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:18:57,205 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-15 00:18:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:57,208 INFO L225 Difference]: With dead ends: 884 [2020-10-15 00:18:57,208 INFO L226 Difference]: Without dead ends: 866 [2020-10-15 00:18:57,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-15 00:18:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 805. [2020-10-15 00:18:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-10-15 00:18:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 988 transitions. [2020-10-15 00:18:57,318 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 988 transitions. Word has length 58 [2020-10-15 00:18:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:57,318 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 988 transitions. [2020-10-15 00:18:57,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:18:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 988 transitions. [2020-10-15 00:18:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:18:57,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:57,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:57,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:18:57,321 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:57,321 INFO L82 PathProgramCache]: Analyzing trace with hash -697576778, now seen corresponding path program 1 times [2020-10-15 00:18:57,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:57,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875570676] [2020-10-15 00:18:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:18:58,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-15 00:18:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 00:18:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:18:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:58,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:58,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:58,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:58,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:58,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:18:58,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:58,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-15 00:18:58,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:18:58,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:18:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:58,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:58,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:58,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:58,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:58,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 00:18:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:58,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:58,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:58,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:58,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875570676] [2020-10-15 00:18:58,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:58,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:18:58,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188174103] [2020-10-15 00:18:58,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:18:58,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:18:58,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:18:58,971 INFO L87 Difference]: Start difference. First operand 805 states and 988 transitions. Second operand 13 states. [2020-10-15 00:19:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:01,579 INFO L93 Difference]: Finished difference Result 890 states and 1087 transitions. [2020-10-15 00:19:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:19:01,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-15 00:19:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:01,583 INFO L225 Difference]: With dead ends: 890 [2020-10-15 00:19:01,583 INFO L226 Difference]: Without dead ends: 862 [2020-10-15 00:19:01,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:19:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2020-10-15 00:19:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 784. [2020-10-15 00:19:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-10-15 00:19:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 960 transitions. [2020-10-15 00:19:01,666 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 960 transitions. Word has length 59 [2020-10-15 00:19:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:01,666 INFO L479 AbstractCegarLoop]: Abstraction has 784 states and 960 transitions. [2020-10-15 00:19:01,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:19:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 960 transitions. [2020-10-15 00:19:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:19:01,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:01,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:01,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:19:01,669 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash 68461815, now seen corresponding path program 1 times [2020-10-15 00:19:01,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:01,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555024973] [2020-10-15 00:19:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:01,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:01,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:19:01,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-15 00:19:01,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:01,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 00:19:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:19:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:02,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:02,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:02,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:02,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:02,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:02,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:02,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:02,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:02,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:02,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:02,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:02,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:02,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:02,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:02,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:02,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:19:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:19:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:19:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:19:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:02,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:02,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:02,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:02,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:02,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:19:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:02,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:02,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:02,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:02,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:02,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555024973] [2020-10-15 00:19:02,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:02,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:19:02,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567068607] [2020-10-15 00:19:02,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:19:02,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:02,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:19:02,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:19:02,328 INFO L87 Difference]: Start difference. First operand 784 states and 960 transitions. Second operand 12 states. [2020-10-15 00:19:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:04,177 INFO L93 Difference]: Finished difference Result 874 states and 1064 transitions. [2020-10-15 00:19:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:19:04,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-15 00:19:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:04,181 INFO L225 Difference]: With dead ends: 874 [2020-10-15 00:19:04,181 INFO L226 Difference]: Without dead ends: 843 [2020-10-15 00:19:04,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:19:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-10-15 00:19:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 772. [2020-10-15 00:19:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-10-15 00:19:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 944 transitions. [2020-10-15 00:19:04,251 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 944 transitions. Word has length 60 [2020-10-15 00:19:04,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:04,251 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 944 transitions. [2020-10-15 00:19:04,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:19:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 944 transitions. [2020-10-15 00:19:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:19:04,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:04,253 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] [2020-10-15 00:19:04,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:19:04,254 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:04,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1833311275, now seen corresponding path program 1 times [2020-10-15 00:19:04,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:04,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115481599] [2020-10-15 00:19:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 00:19:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-15 00:19:04,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:19:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 00:19:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:19:04,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 67 [2020-10-15 00:19:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:19:04,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:19:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:04,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:19:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:19:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:19:04,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:19:04,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 00:19:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:19:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:19:04,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:04,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:04,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:04,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:04,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:04,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:04,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:04,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:19:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:04,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115481599] [2020-10-15 00:19:04,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:04,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:19:04,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260068194] [2020-10-15 00:19:04,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:19:04,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:04,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:19:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:19:04,807 INFO L87 Difference]: Start difference. First operand 772 states and 944 transitions. Second operand 11 states. [2020-10-15 00:19:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:06,402 INFO L93 Difference]: Finished difference Result 1096 states and 1345 transitions. [2020-10-15 00:19:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:19:06,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-15 00:19:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:06,406 INFO L225 Difference]: With dead ends: 1096 [2020-10-15 00:19:06,406 INFO L226 Difference]: Without dead ends: 809 [2020-10-15 00:19:06,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:19:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-15 00:19:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 744. [2020-10-15 00:19:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-15 00:19:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 899 transitions. [2020-10-15 00:19:06,501 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 899 transitions. Word has length 68 [2020-10-15 00:19:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:06,501 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 899 transitions. [2020-10-15 00:19:06,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:19:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 899 transitions. [2020-10-15 00:19:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:19:06,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:06,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:06,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:19:06,504 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash 569075231, now seen corresponding path program 1 times [2020-10-15 00:19:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:06,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463805125] [2020-10-15 00:19:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:08,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:19:08,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-15 00:19:08,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:08,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:19:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:19:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:08,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:08,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:08,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:08,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:08,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:19:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:08,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:08,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:08,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:08,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:08,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:08,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:19:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:08,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:19:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:08,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:08,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:08,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:08,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-15 00:19:08,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:08,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:08,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:19:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:19:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:09,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:09,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:19:09,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:19:09,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:09,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:09,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:19:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:09,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:09,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:09,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:09,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:09,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:19:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:09,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463805125] [2020-10-15 00:19:09,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:09,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:19:09,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451824065] [2020-10-15 00:19:09,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:19:09,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:19:09,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:19:09,045 INFO L87 Difference]: Start difference. First operand 744 states and 899 transitions. Second operand 11 states. [2020-10-15 00:19:10,776 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-15 00:19:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:11,426 INFO L93 Difference]: Finished difference Result 817 states and 983 transitions. [2020-10-15 00:19:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:19:11,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-15 00:19:11,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:11,429 INFO L225 Difference]: With dead ends: 817 [2020-10-15 00:19:11,429 INFO L226 Difference]: Without dead ends: 812 [2020-10-15 00:19:11,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:19:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-15 00:19:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 744. [2020-10-15 00:19:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-15 00:19:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 898 transitions. [2020-10-15 00:19:11,487 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 898 transitions. Word has length 61 [2020-10-15 00:19:11,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:11,487 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 898 transitions. [2020-10-15 00:19:11,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:19:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 898 transitions. [2020-10-15 00:19:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 00:19:11,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:11,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:11,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:19:11,490 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:11,490 INFO L82 PathProgramCache]: Analyzing trace with hash -142079930, now seen corresponding path program 1 times [2020-10-15 00:19:11,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:11,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392980401] [2020-10-15 00:19:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 00:19:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-15 00:19:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:11,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 00:19:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:11,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:11,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:11,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:11,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:11,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:11,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:11,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:11,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:11,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:11,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:11,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:11,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:11,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:11,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:11,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:11,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:11,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:11,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:19:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:12,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:12,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:12,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:12,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:19:12,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:12,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:12,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:12,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:12,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:19:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:12,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:12,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:19:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:12,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:12,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:12,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:12,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:12,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:12,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:12,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:12,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:19:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:12,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:12,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392980401] [2020-10-15 00:19:12,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:12,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:19:12,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456551139] [2020-10-15 00:19:12,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:19:12,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:12,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:19:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:19:12,110 INFO L87 Difference]: Start difference. First operand 744 states and 898 transitions. Second operand 12 states. [2020-10-15 00:19:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:14,104 INFO L93 Difference]: Finished difference Result 1081 states and 1315 transitions. [2020-10-15 00:19:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:19:14,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-15 00:19:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:14,108 INFO L225 Difference]: With dead ends: 1081 [2020-10-15 00:19:14,108 INFO L226 Difference]: Without dead ends: 849 [2020-10-15 00:19:14,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:19:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-10-15 00:19:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-10-15 00:19:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-10-15 00:19:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 900 transitions. [2020-10-15 00:19:14,168 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 900 transitions. Word has length 70 [2020-10-15 00:19:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:14,168 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 900 transitions. [2020-10-15 00:19:14,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:19:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 900 transitions. [2020-10-15 00:19:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:19:14,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:14,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:14,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:19:14,171 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1152303328, now seen corresponding path program 1 times [2020-10-15 00:19:14,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:14,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278354633] [2020-10-15 00:19:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:14,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:14,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:19:14,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:14,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-15 00:19:14,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:14,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:14,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 00:19:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:15,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:15,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:15,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:15,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:15,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:15,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:15,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:19:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:19:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:15,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:19:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:19:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 00:19:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:19:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:15,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:19:15,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:15,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:15,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:15,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:15,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278354633] [2020-10-15 00:19:15,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:15,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:19:15,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63582759] [2020-10-15 00:19:15,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:19:15,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:15,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:19:15,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:19:15,674 INFO L87 Difference]: Start difference. First operand 747 states and 900 transitions. Second operand 12 states. [2020-10-15 00:19:17,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:17,791 INFO L93 Difference]: Finished difference Result 806 states and 970 transitions. [2020-10-15 00:19:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:17,792 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-15 00:19:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:17,795 INFO L225 Difference]: With dead ends: 806 [2020-10-15 00:19:17,795 INFO L226 Difference]: Without dead ends: 781 [2020-10-15 00:19:17,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:19:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-15 00:19:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 728. [2020-10-15 00:19:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-15 00:19:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 876 transitions. [2020-10-15 00:19:17,885 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 876 transitions. Word has length 63 [2020-10-15 00:19:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:17,885 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 876 transitions. [2020-10-15 00:19:17,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:19:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 876 transitions. [2020-10-15 00:19:17,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:19:17,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:17,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:17,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:19:17,887 INFO L427 AbstractCegarLoop]: === Iteration 41 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:17,888 INFO L82 PathProgramCache]: Analyzing trace with hash 500831766, now seen corresponding path program 1 times [2020-10-15 00:19:17,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:17,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476959583] [2020-10-15 00:19:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:19:18,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-15 00:19:18,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:19:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:19:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:18,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:19:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:18,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:19:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:19:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:19:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:19:18,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:19:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:19:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:18,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:18,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476959583] [2020-10-15 00:19:18,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:18,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:18,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413506677] [2020-10-15 00:19:18,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:18,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:18,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:18,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:18,623 INFO L87 Difference]: Start difference. First operand 728 states and 876 transitions. Second operand 14 states. [2020-10-15 00:19:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:21,168 INFO L93 Difference]: Finished difference Result 801 states and 962 transitions. [2020-10-15 00:19:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:19:21,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-15 00:19:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:21,171 INFO L225 Difference]: With dead ends: 801 [2020-10-15 00:19:21,171 INFO L226 Difference]: Without dead ends: 748 [2020-10-15 00:19:21,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:19:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-15 00:19:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 689. [2020-10-15 00:19:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-15 00:19:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 825 transitions. [2020-10-15 00:19:21,242 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 825 transitions. Word has length 63 [2020-10-15 00:19:21,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:21,242 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 825 transitions. [2020-10-15 00:19:21,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 825 transitions. [2020-10-15 00:19:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:19:21,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:21,244 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] [2020-10-15 00:19:21,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:19:21,244 INFO L427 AbstractCegarLoop]: === Iteration 42 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:21,245 INFO L82 PathProgramCache]: Analyzing trace with hash -675450423, now seen corresponding path program 1 times [2020-10-15 00:19:21,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:21,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103562080] [2020-10-15 00:19:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:19:21,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-15 00:19:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:19:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:19:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:21,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:21,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:21,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:21,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:21,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:21,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:21,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:21,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:21,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:19:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 00:19:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:19:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:19:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:19:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:21,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:19:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:19:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:19:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:21,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:21,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:19:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:21,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103562080] [2020-10-15 00:19:21,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:21,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:19:21,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162686557] [2020-10-15 00:19:21,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:19:21,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:21,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:19:21,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:19:21,718 INFO L87 Difference]: Start difference. First operand 689 states and 825 transitions. Second operand 11 states. [2020-10-15 00:19:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:23,528 INFO L93 Difference]: Finished difference Result 758 states and 907 transitions. [2020-10-15 00:19:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:23,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-15 00:19:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:23,530 INFO L225 Difference]: With dead ends: 758 [2020-10-15 00:19:23,530 INFO L226 Difference]: Without dead ends: 726 [2020-10-15 00:19:23,531 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 [2020-10-15 00:19:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-15 00:19:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 662. [2020-10-15 00:19:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-15 00:19:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 795 transitions. [2020-10-15 00:19:23,617 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 795 transitions. Word has length 64 [2020-10-15 00:19:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:23,617 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 795 transitions. [2020-10-15 00:19:23,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:19:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 795 transitions. [2020-10-15 00:19:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:19:23,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:23,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:23,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:19:23,620 INFO L427 AbstractCegarLoop]: === Iteration 43 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash -424680973, now seen corresponding path program 1 times [2020-10-15 00:19:23,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:23,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166893504] [2020-10-15 00:19:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:23,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:23,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:19:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-15 00:19:23,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:23,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 00:19:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:23,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:23,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:23,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:23,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:23,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:23,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:23,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:23,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:23,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:23,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:23,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:23,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:24,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:24,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:24,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:19:24,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:24,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:19:24,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:24,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166893504] [2020-10-15 00:19:24,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:24,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:24,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678358659] [2020-10-15 00:19:24,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:24,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:24,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:24,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:24,089 INFO L87 Difference]: Start difference. First operand 662 states and 795 transitions. Second operand 14 states. [2020-10-15 00:19:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:26,097 INFO L93 Difference]: Finished difference Result 738 states and 884 transitions. [2020-10-15 00:19:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:26,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-15 00:19:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:26,100 INFO L225 Difference]: With dead ends: 738 [2020-10-15 00:19:26,100 INFO L226 Difference]: Without dead ends: 717 [2020-10-15 00:19:26,101 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 [2020-10-15 00:19:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-15 00:19:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 658. [2020-10-15 00:19:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 00:19:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 789 transitions. [2020-10-15 00:19:26,163 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 789 transitions. Word has length 63 [2020-10-15 00:19:26,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:26,163 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 789 transitions. [2020-10-15 00:19:26,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 789 transitions. [2020-10-15 00:19:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 00:19:26,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:26,165 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] [2020-10-15 00:19:26,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:19:26,166 INFO L427 AbstractCegarLoop]: === Iteration 44 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:26,166 INFO L82 PathProgramCache]: Analyzing trace with hash 11742048, now seen corresponding path program 1 times [2020-10-15 00:19:26,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:26,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962067385] [2020-10-15 00:19:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 00:19:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-15 00:19:26,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-15 00:19:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:19:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:26,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:26,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:26,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:19:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:19:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:26,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:19:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:26,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:26,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:26,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:26,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:19:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:26,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962067385] [2020-10-15 00:19:26,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:26,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:19:26,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257380743] [2020-10-15 00:19:26,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:19:26,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:26,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:19:26,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:19:26,816 INFO L87 Difference]: Start difference. First operand 658 states and 789 transitions. Second operand 9 states. [2020-10-15 00:19:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:28,085 INFO L93 Difference]: Finished difference Result 1127 states and 1370 transitions. [2020-10-15 00:19:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:19:28,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 00:19:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:28,088 INFO L225 Difference]: With dead ends: 1127 [2020-10-15 00:19:28,088 INFO L226 Difference]: Without dead ends: 865 [2020-10-15 00:19:28,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:19:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2020-10-15 00:19:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 779. [2020-10-15 00:19:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-10-15 00:19:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 938 transitions. [2020-10-15 00:19:28,156 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 938 transitions. Word has length 72 [2020-10-15 00:19:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:28,157 INFO L479 AbstractCegarLoop]: Abstraction has 779 states and 938 transitions. [2020-10-15 00:19:28,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:19:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 938 transitions. [2020-10-15 00:19:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:19:28,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:28,158 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] [2020-10-15 00:19:28,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 00:19:28,159 INFO L427 AbstractCegarLoop]: === Iteration 45 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:28,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1434577785, now seen corresponding path program 1 times [2020-10-15 00:19:28,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:28,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828831618] [2020-10-15 00:19:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:28,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:19:28,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:28,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:28,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:28,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:28,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:28,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:28,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:28,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:19:28,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:28,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:19:28,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:28,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:19:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:28,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:19:28,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:28,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:28,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828831618] [2020-10-15 00:19:28,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:28,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:28,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999997314] [2020-10-15 00:19:28,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:28,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:28,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:28,664 INFO L87 Difference]: Start difference. First operand 779 states and 938 transitions. Second operand 14 states. [2020-10-15 00:19:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:30,728 INFO L93 Difference]: Finished difference Result 855 states and 1028 transitions. [2020-10-15 00:19:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:30,731 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-15 00:19:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:30,733 INFO L225 Difference]: With dead ends: 855 [2020-10-15 00:19:30,733 INFO L226 Difference]: Without dead ends: 833 [2020-10-15 00:19:30,734 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 [2020-10-15 00:19:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-15 00:19:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 774. [2020-10-15 00:19:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-15 00:19:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 931 transitions. [2020-10-15 00:19:30,799 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 931 transitions. Word has length 64 [2020-10-15 00:19:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:30,800 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 931 transitions. [2020-10-15 00:19:30,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 931 transitions. [2020-10-15 00:19:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:19:30,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:30,801 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] [2020-10-15 00:19:30,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 00:19:30,801 INFO L427 AbstractCegarLoop]: === Iteration 46 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:30,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:30,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1930278041, now seen corresponding path program 1 times [2020-10-15 00:19:30,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:30,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401358849] [2020-10-15 00:19:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 00:19:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:31,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:31,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:31,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:31,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:19:31,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:19:31,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:31,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:19:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:31,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:31,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:31,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:31,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401358849] [2020-10-15 00:19:31,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:31,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:31,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836484297] [2020-10-15 00:19:31,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:31,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:31,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:31,257 INFO L87 Difference]: Start difference. First operand 774 states and 931 transitions. Second operand 14 states. [2020-10-15 00:19:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:33,434 INFO L93 Difference]: Finished difference Result 850 states and 1021 transitions. [2020-10-15 00:19:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:33,435 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-15 00:19:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:33,438 INFO L225 Difference]: With dead ends: 850 [2020-10-15 00:19:33,438 INFO L226 Difference]: Without dead ends: 829 [2020-10-15 00:19:33,439 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 [2020-10-15 00:19:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-15 00:19:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 770. [2020-10-15 00:19:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-10-15 00:19:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 925 transitions. [2020-10-15 00:19:33,517 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 925 transitions. Word has length 64 [2020-10-15 00:19:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:33,518 INFO L479 AbstractCegarLoop]: Abstraction has 770 states and 925 transitions. [2020-10-15 00:19:33,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 925 transitions. [2020-10-15 00:19:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:19:33,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:33,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:33,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 00:19:33,519 INFO L427 AbstractCegarLoop]: === Iteration 47 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 95437333, now seen corresponding path program 1 times [2020-10-15 00:19:33,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:33,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387788781] [2020-10-15 00:19:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-15 00:19:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:19:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:33,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:33,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:33,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:33,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:33,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:33,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:33,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:33,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:19:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:19:33,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:19:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:19:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 00:19:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:33,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:33,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:33,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:34,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387788781] [2020-10-15 00:19:34,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:34,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:19:34,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546468722] [2020-10-15 00:19:34,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:19:34,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:34,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:19:34,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:19:34,012 INFO L87 Difference]: Start difference. First operand 770 states and 925 transitions. Second operand 13 states. [2020-10-15 00:19:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:35,690 INFO L93 Difference]: Finished difference Result 840 states and 1009 transitions. [2020-10-15 00:19:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:35,691 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-15 00:19:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:35,693 INFO L225 Difference]: With dead ends: 840 [2020-10-15 00:19:35,693 INFO L226 Difference]: Without dead ends: 804 [2020-10-15 00:19:35,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-15 00:19:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 709. [2020-10-15 00:19:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-15 00:19:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 854 transitions. [2020-10-15 00:19:35,762 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 854 transitions. Word has length 64 [2020-10-15 00:19:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:35,762 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 854 transitions. [2020-10-15 00:19:35,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:19:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 854 transitions. [2020-10-15 00:19:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:19:35,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:35,763 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] [2020-10-15 00:19:35,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 00:19:35,763 INFO L427 AbstractCegarLoop]: === Iteration 48 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash -225813176, now seen corresponding path program 1 times [2020-10-15 00:19:35,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:35,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467045202] [2020-10-15 00:19:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 00:19:35,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:19:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:35,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:35,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:35,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:35,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:19:35,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:35,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:36,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:36,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:36,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:36,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:36,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:36,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:36,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:36,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:36,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:36,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:36,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:36,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:36,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:19:36,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:19:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 00:19:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:36,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467045202] [2020-10-15 00:19:36,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:36,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:36,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960928978] [2020-10-15 00:19:36,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:36,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:36,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:36,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:36,209 INFO L87 Difference]: Start difference. First operand 709 states and 854 transitions. Second operand 14 states. [2020-10-15 00:19:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:37,686 INFO L93 Difference]: Finished difference Result 775 states and 932 transitions. [2020-10-15 00:19:37,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:19:37,687 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-15 00:19:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:37,689 INFO L225 Difference]: With dead ends: 775 [2020-10-15 00:19:37,689 INFO L226 Difference]: Without dead ends: 732 [2020-10-15 00:19:37,690 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 [2020-10-15 00:19:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-15 00:19:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 683. [2020-10-15 00:19:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-15 00:19:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 822 transitions. [2020-10-15 00:19:37,751 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 822 transitions. Word has length 68 [2020-10-15 00:19:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:37,752 INFO L479 AbstractCegarLoop]: Abstraction has 683 states and 822 transitions. [2020-10-15 00:19:37,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 822 transitions. [2020-10-15 00:19:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:19:37,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:37,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:37,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 00:19:37,753 INFO L427 AbstractCegarLoop]: === Iteration 49 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash 840113219, now seen corresponding path program 1 times [2020-10-15 00:19:37,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:37,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636690362] [2020-10-15 00:19:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:37,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 00:19:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:19:38,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:38,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:19:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:19:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:19:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:38,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:38,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:19:38,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-15 00:19:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:19:38,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:19:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:38,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636690362] [2020-10-15 00:19:38,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:38,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:19:38,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308464342] [2020-10-15 00:19:38,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:19:38,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:19:38,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:19:38,435 INFO L87 Difference]: Start difference. First operand 683 states and 822 transitions. Second operand 11 states. [2020-10-15 00:19:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:39,716 INFO L93 Difference]: Finished difference Result 1042 states and 1264 transitions. [2020-10-15 00:19:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:19:39,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-10-15 00:19:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:39,719 INFO L225 Difference]: With dead ends: 1042 [2020-10-15 00:19:39,719 INFO L226 Difference]: Without dead ends: 716 [2020-10-15 00:19:39,720 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 [2020-10-15 00:19:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-15 00:19:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 661. [2020-10-15 00:19:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-15 00:19:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 787 transitions. [2020-10-15 00:19:39,783 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 787 transitions. Word has length 81 [2020-10-15 00:19:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:39,783 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 787 transitions. [2020-10-15 00:19:39,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:19:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 787 transitions. [2020-10-15 00:19:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 00:19:39,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:39,784 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] [2020-10-15 00:19:39,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 00:19:39,785 INFO L427 AbstractCegarLoop]: === Iteration 50 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash -161246948, now seen corresponding path program 1 times [2020-10-15 00:19:39,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:39,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289585588] [2020-10-15 00:19:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:39,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:19:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:40,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 00:19:40,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:19:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:19:40,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:40,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 00:19:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:19:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:40,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:40,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:19:40,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:40,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:40,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:40,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289585588] [2020-10-15 00:19:40,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:40,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:40,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478954020] [2020-10-15 00:19:40,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:40,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:40,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:40,487 INFO L87 Difference]: Start difference. First operand 661 states and 787 transitions. Second operand 14 states. [2020-10-15 00:19:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:41,829 INFO L93 Difference]: Finished difference Result 1061 states and 1304 transitions. [2020-10-15 00:19:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:19:41,830 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-15 00:19:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:41,832 INFO L225 Difference]: With dead ends: 1061 [2020-10-15 00:19:41,832 INFO L226 Difference]: Without dead ends: 807 [2020-10-15 00:19:41,833 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 [2020-10-15 00:19:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-10-15 00:19:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 620. [2020-10-15 00:19:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-15 00:19:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 735 transitions. [2020-10-15 00:19:41,887 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 735 transitions. Word has length 82 [2020-10-15 00:19:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:41,887 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 735 transitions. [2020-10-15 00:19:41,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 735 transitions. [2020-10-15 00:19:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 00:19:41,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:41,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:41,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 00:19:41,889 INFO L427 AbstractCegarLoop]: === Iteration 51 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash -105592002, now seen corresponding path program 1 times [2020-10-15 00:19:41,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:41,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157287019] [2020-10-15 00:19:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:19:44,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2328 [2020-10-15 00:19:44,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:19:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:19:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:44,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:44,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:19:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:19:44,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-15 00:19:44,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:19:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:19:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:19:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:19:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:19:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:19:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:19:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:19:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:19:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:19:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:44,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:19:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:44,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157287019] [2020-10-15 00:19:44,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:44,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:19:44,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262675436] [2020-10-15 00:19:44,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:19:44,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:44,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:19:44,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:19:44,721 INFO L87 Difference]: Start difference. First operand 620 states and 735 transitions. Second operand 13 states. [2020-10-15 00:19:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:46,880 INFO L93 Difference]: Finished difference Result 1250 states and 1463 transitions. [2020-10-15 00:19:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:19:46,882 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2020-10-15 00:19:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:46,885 INFO L225 Difference]: With dead ends: 1250 [2020-10-15 00:19:46,885 INFO L226 Difference]: Without dead ends: 850 [2020-10-15 00:19:46,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:19:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-15 00:19:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 745. [2020-10-15 00:19:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-10-15 00:19:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 871 transitions. [2020-10-15 00:19:46,954 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 871 transitions. Word has length 80 [2020-10-15 00:19:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:46,954 INFO L479 AbstractCegarLoop]: Abstraction has 745 states and 871 transitions. [2020-10-15 00:19:46,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:19:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 871 transitions. [2020-10-15 00:19:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:19:46,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:46,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:19:46,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 00:19:46,956 INFO L427 AbstractCegarLoop]: === Iteration 52 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1204121324, now seen corresponding path program 1 times [2020-10-15 00:19:46,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:46,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128844133] [2020-10-15 00:19:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 00:19:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-15 00:19:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 00:19:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:19:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:47,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:47,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:47,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:47,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:19:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:19:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-15 00:19:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:19:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 00:19:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:19:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:19:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:19:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:47,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:19:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:47,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:47,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:19:47,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:19:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:47,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128844133] [2020-10-15 00:19:47,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:47,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 00:19:47,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359926011] [2020-10-15 00:19:47,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:19:47,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:47,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:19:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:19:47,887 INFO L87 Difference]: Start difference. First operand 745 states and 871 transitions. Second operand 16 states. [2020-10-15 00:19:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:49,750 INFO L93 Difference]: Finished difference Result 752 states and 877 transitions. [2020-10-15 00:19:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:19:49,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2020-10-15 00:19:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:49,753 INFO L225 Difference]: With dead ends: 752 [2020-10-15 00:19:49,753 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 00:19:49,754 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 [2020-10-15 00:19:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 00:19:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 653. [2020-10-15 00:19:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-10-15 00:19:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 764 transitions. [2020-10-15 00:19:49,830 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 764 transitions. Word has length 81 [2020-10-15 00:19:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:49,830 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 764 transitions. [2020-10-15 00:19:49,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:19:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 764 transitions. [2020-10-15 00:19:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 00:19:49,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:49,831 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] [2020-10-15 00:19:49,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 00:19:49,832 INFO L427 AbstractCegarLoop]: === Iteration 53 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:49,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1765631649, now seen corresponding path program 1 times [2020-10-15 00:19:49,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:49,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744300574] [2020-10-15 00:19:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 00:19:50,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-15 00:19:50,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:19:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 00:19:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:19:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:19:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:19:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:19:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:50,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:50,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:19:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:19:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:19:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-15 00:19:50,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:19:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 00:19:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:19:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:19:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:19:50,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:19:50,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:19:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:50,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:50,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:19:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:19:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:19:50,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:19:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:19:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:19:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 00:19:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:19:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:19:50,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:19:50,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:19:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:19:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:19:50,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:19:50,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:19:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:19:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:19:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:19:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:19:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:19:50,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744300574] [2020-10-15 00:19:50,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:19:50,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:19:50,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461963366] [2020-10-15 00:19:50,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:19:50,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:19:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:19:50,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:19:50,922 INFO L87 Difference]: Start difference. First operand 653 states and 764 transitions. Second operand 14 states. [2020-10-15 00:19:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:19:52,655 INFO L93 Difference]: Finished difference Result 679 states and 790 transitions. [2020-10-15 00:19:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:19:52,656 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2020-10-15 00:19:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:19:52,658 INFO L225 Difference]: With dead ends: 679 [2020-10-15 00:19:52,658 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 00:19:52,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:19:52,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 00:19:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 653. [2020-10-15 00:19:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-10-15 00:19:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 763 transitions. [2020-10-15 00:19:52,715 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 763 transitions. Word has length 88 [2020-10-15 00:19:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:19:52,716 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 763 transitions. [2020-10-15 00:19:52,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:19:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 763 transitions. [2020-10-15 00:19:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 00:19:52,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:19:52,717 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] [2020-10-15 00:19:52,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 00:19:52,717 INFO L427 AbstractCegarLoop]: === Iteration 54 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:19:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:19:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1790671204, now seen corresponding path program 1 times [2020-10-15 00:19:52,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:19:52,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499053465] [2020-10-15 00:19:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:19:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 00:19:52,736 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 00:19:52,736 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 00:19:52,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 00:19:52,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:19:52 BoogieIcfgContainer [2020-10-15 00:19:52,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:19:52,780 INFO L168 Benchmark]: Toolchain (without parser) took 160903.34 ms. Allocated memory was 147.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 102.8 MB in the beginning and 220.4 MB in the end (delta: -117.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-15 00:19:52,780 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 00:19:52,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.87 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 173.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-10-15 00:19:52,781 INFO L168 Benchmark]: Boogie Preprocessor took 102.61 ms. Allocated memory is still 206.0 MB. Free memory was 173.2 MB in the beginning and 169.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-15 00:19:52,781 INFO L168 Benchmark]: RCFGBuilder took 1448.17 ms. Allocated memory was 206.0 MB in the beginning and 236.5 MB in the end (delta: 30.4 MB). Free memory was 169.2 MB in the beginning and 163.0 MB in the end (delta: 6.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-10-15 00:19:52,782 INFO L168 Benchmark]: TraceAbstraction took 158561.76 ms. Allocated memory was 236.5 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 161.4 MB in the beginning and 220.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 976.9 MB. Max. memory is 7.1 GB. [2020-10-15 00:19:52,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 783.87 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 173.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.61 ms. Allocated memory is still 206.0 MB. Free memory was 173.2 MB in the beginning and 169.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1448.17 ms. Allocated memory was 206.0 MB in the beginning and 236.5 MB in the end (delta: 30.4 MB). Free memory was 169.2 MB in the beginning and 163.0 MB in the end (delta: 6.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 158561.76 ms. Allocated memory was 236.5 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 161.4 MB in the beginning and 220.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 976.9 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: 158.4s, OverallIterations: 54, TraceHistogramMax: 1, AutomataDifference: 110.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22793 SDtfs, 32782 SDslu, 39841 SDs, 0 SdLazy, 81128 SolverSat, 9833 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1171 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 700 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1368occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 53 MinimizatonAttempts, 4964 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 41.0s InterpolantComputationTime, 2918 NumberOfCodeBlocks, 2918 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 2780 ConstructedInterpolants, 0 QuantifiedInterpolants, 758178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 53 InterpolantComputations, 53 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...