/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:41:08,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:41:08,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:41:08,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:41:08,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:41:08,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:41:08,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:41:08,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:41:08,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:41:08,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:41:08,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:41:08,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:41:08,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:41:08,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:41:08,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:41:08,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:41:08,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:41:08,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:41:08,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:41:08,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:41:08,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:41:08,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:41:08,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:41:08,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:41:08,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:41:08,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:41:08,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:41:08,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:41:08,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:41:08,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:41:08,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:41:08,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:41:08,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:41:08,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:41:08,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:41:08,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:41:08,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:41:08,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:41:08,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:41:08,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:41:08,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:41:08,584 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 [2020-10-14 05:41:08,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:41:08,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:41:08,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:41:08,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:41:08,622 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:41:08,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:41:08,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:41:08,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:41:08,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:41:08,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:41:08,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:41:08,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:41:08,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:41:08,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:41:08,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:41:08,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:41:08,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:41:08,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:41:08,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:41:08,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:41:08,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:41:08,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:41:08,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:41:08,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:41:08,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:41:08,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:41:08,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:41:08,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:41:08,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:41:08,630 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:41:08,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:41:08,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:41:08,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:41:08,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:41:08,969 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:41:08,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-14 05:41:09,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a098d4c/f02f521f5ac34839b25700eb1516ff21/FLAG7997dd516 [2020-10-14 05:41:09,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:41:09,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-14 05:41:09,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a098d4c/f02f521f5ac34839b25700eb1516ff21/FLAG7997dd516 [2020-10-14 05:41:09,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a098d4c/f02f521f5ac34839b25700eb1516ff21 [2020-10-14 05:41:09,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:41:09,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:41:09,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:41:09,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:41:09,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:41:09,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:41:09" (1/1) ... [2020-10-14 05:41:09,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a3b408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:09, skipping insertion in model container [2020-10-14 05:41:09,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:41:09" (1/1) ... [2020-10-14 05:41:09,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:41:10,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:41:10,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:41:10,530 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:41:10,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:41:10,718 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:41:10,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10 WrapperNode [2020-10-14 05:41:10,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:41:10,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:41:10,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:41:10,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:41:10,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (1/1) ... [2020-10-14 05:41:10,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:41:10,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:41:10,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:41:10,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:41:10,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (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 [2020-10-14 05:41:10,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:41:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:41:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-14 05:41:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-14 05:41:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-14 05:41:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-14 05:41:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-14 05:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-14 05:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-14 05:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-14 05:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-14 05:41:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-14 05:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-14 05:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-14 05:41:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-14 05:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-14 05:41:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-14 05:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-14 05:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-14 05:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-14 05:41:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-14 05:41:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-14 05:41:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:41:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-14 05:41:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-14 05:41:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-14 05:41:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-14 05:41:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-14 05:41:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-14 05:41:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-14 05:41:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 05:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 05:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-14 05:41:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-14 05:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-14 05:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-14 05:41:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-14 05:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-14 05:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-14 05:41:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-14 05:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-14 05:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-14 05:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-14 05:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-14 05:41:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-14 05:41:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-14 05:41:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-14 05:41:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-14 05:41:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-14 05:41:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-14 05:41:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-14 05:41:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-14 05:41:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-14 05:41:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-14 05:41:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-14 05:41:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-14 05:41:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-14 05:41:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-14 05:41:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:41:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-14 05:41:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:41:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:41:11,589 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:11,798 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-14 05:41:11,798 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-14 05:41:11,815 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:11,892 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-14 05:41:11,893 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-14 05:41:11,923 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:11,969 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-14 05:41:11,969 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-14 05:41:12,084 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:12,126 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-14 05:41:12,127 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-14 05:41:12,127 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint L303: #res := 0; [2020-10-14 05:41:12,139 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:12,297 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-14 05:41:12,297 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-14 05:41:12,299 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:12,341 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-14 05:41:12,341 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-14 05:41:12,374 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:12,395 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-14 05:41:12,395 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-14 05:41:12,401 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:12,615 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-14 05:41:12,615 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-14 05:41:12,631 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 05:41:12,637 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-14 05:41:12,638 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-14 05:41:12,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:41:12,673 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:41:12,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:41:12 BoogieIcfgContainer [2020-10-14 05:41:12,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:41:12,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:41:12,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:41:12,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:41:12,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:41:09" (1/3) ... [2020-10-14 05:41:12,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f61a2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:41:12, skipping insertion in model container [2020-10-14 05:41:12,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:41:10" (2/3) ... [2020-10-14 05:41:12,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f61a2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:41:12, skipping insertion in model container [2020-10-14 05:41:12,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:41:12" (3/3) ... [2020-10-14 05:41:12,692 INFO L109 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2020-10-14 05:41:12,703 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:41:12,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:41:12,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:41:12,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:41:12,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:41:12,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:41:12,765 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:41:12,765 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:41:12,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:41:12,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:41:12,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:41:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states. [2020-10-14 05:41:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:41:12,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:12,811 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] [2020-10-14 05:41:12,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:12,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1098408584, now seen corresponding path program 1 times [2020-10-14 05:41:12,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:12,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37170674] [2020-10-14 05:41:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:13,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:13,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:41:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:41:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-14 05:41:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:13,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:41:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:41:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:41:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:41:13,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:13,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:14,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:41:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:14,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:41:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:14,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37170674] [2020-10-14 05:41:14,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:14,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:41:14,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462278962] [2020-10-14 05:41:14,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:41:14,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:14,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:41:14,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:41:14,079 INFO L87 Difference]: Start difference. First operand 517 states. Second operand 5 states. [2020-10-14 05:41:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:17,125 INFO L93 Difference]: Finished difference Result 1222 states and 1940 transitions. [2020-10-14 05:41:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:17,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 05:41:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:17,152 INFO L225 Difference]: With dead ends: 1222 [2020-10-14 05:41:17,152 INFO L226 Difference]: Without dead ends: 845 [2020-10-14 05:41:17,163 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 [2020-10-14 05:41:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-14 05:41:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 673. [2020-10-14 05:41:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-14 05:41:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 965 transitions. [2020-10-14 05:41:17,327 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 965 transitions. Word has length 20 [2020-10-14 05:41:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:17,327 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 965 transitions. [2020-10-14 05:41:17,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:41:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 965 transitions. [2020-10-14 05:41:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:41:17,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:17,329 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] [2020-10-14 05:41:17,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:41:17,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1083417759, now seen corresponding path program 1 times [2020-10-14 05:41:17,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:17,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434007792] [2020-10-14 05:41:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:17,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:17,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:41:17,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 05:41:17,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:17,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:41:17,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:41:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:41:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:17,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:17,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:17,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:17,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:41:17,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:17,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:17,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:41:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:17,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:17,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:17,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:41:17,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:17,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:17,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:41:17,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:17,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434007792] [2020-10-14 05:41:17,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:17,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:41:17,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413342599] [2020-10-14 05:41:17,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:41:17,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:17,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:41:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:41:17,628 INFO L87 Difference]: Start difference. First operand 673 states and 965 transitions. Second operand 5 states. [2020-10-14 05:41:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:20,497 INFO L93 Difference]: Finished difference Result 848 states and 1264 transitions. [2020-10-14 05:41:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:20,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 05:41:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:20,514 INFO L225 Difference]: With dead ends: 848 [2020-10-14 05:41:20,514 INFO L226 Difference]: Without dead ends: 832 [2020-10-14 05:41:20,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-14 05:41:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 673. [2020-10-14 05:41:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-14 05:41:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 964 transitions. [2020-10-14 05:41:20,618 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 964 transitions. Word has length 20 [2020-10-14 05:41:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:20,618 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 964 transitions. [2020-10-14 05:41:20,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:41:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 964 transitions. [2020-10-14 05:41:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:41:20,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:20,620 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] [2020-10-14 05:41:20,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:41:20,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1051395834, now seen corresponding path program 1 times [2020-10-14 05:41:20,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:20,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037913571] [2020-10-14 05:41:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:20,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:20,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 05:41:20,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 05:41:20,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:20,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:41:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:41:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:41:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:20,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:20,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:41:20,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:20,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:20,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:20,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:20,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:41:20,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:20,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:20,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:20,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:20,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:41:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:20,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:41:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:20,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037913571] [2020-10-14 05:41:20,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:20,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:41:20,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930465227] [2020-10-14 05:41:20,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:41:20,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:20,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:41:20,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:20,965 INFO L87 Difference]: Start difference. First operand 673 states and 964 transitions. Second operand 6 states. [2020-10-14 05:41:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:24,212 INFO L93 Difference]: Finished difference Result 1369 states and 1983 transitions. [2020-10-14 05:41:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:24,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-14 05:41:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:24,222 INFO L225 Difference]: With dead ends: 1369 [2020-10-14 05:41:24,222 INFO L226 Difference]: Without dead ends: 1148 [2020-10-14 05:41:24,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:41:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2020-10-14 05:41:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 928. [2020-10-14 05:41:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-10-14 05:41:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1329 transitions. [2020-10-14 05:41:24,322 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1329 transitions. Word has length 25 [2020-10-14 05:41:24,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:24,323 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1329 transitions. [2020-10-14 05:41:24,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:41:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1329 transitions. [2020-10-14 05:41:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:41:24,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:24,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:41:24,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:41:24,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash -584641203, now seen corresponding path program 1 times [2020-10-14 05:41:24,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:24,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996406526] [2020-10-14 05:41:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 05:41:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 05:41:24,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:24,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:41:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:41:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:41:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:24,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:24,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:24,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:24,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:24,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:24,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:41:24,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:24,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:24,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:24,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:24,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:41:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:24,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:41:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:24,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996406526] [2020-10-14 05:41:24,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:24,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:41:24,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303118983] [2020-10-14 05:41:24,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:41:24,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:24,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:41:24,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:24,929 INFO L87 Difference]: Start difference. First operand 928 states and 1329 transitions. Second operand 6 states. [2020-10-14 05:41:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:27,921 INFO L93 Difference]: Finished difference Result 1400 states and 2000 transitions. [2020-10-14 05:41:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:27,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-14 05:41:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:27,930 INFO L225 Difference]: With dead ends: 1400 [2020-10-14 05:41:27,930 INFO L226 Difference]: Without dead ends: 1126 [2020-10-14 05:41:27,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:41:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-10-14 05:41:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 968. [2020-10-14 05:41:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-10-14 05:41:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1385 transitions. [2020-10-14 05:41:28,007 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1385 transitions. Word has length 30 [2020-10-14 05:41:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:28,008 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1385 transitions. [2020-10-14 05:41:28,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:41:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1385 transitions. [2020-10-14 05:41:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:41:28,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:28,010 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] [2020-10-14 05:41:28,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:41:28,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:28,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1008074, now seen corresponding path program 1 times [2020-10-14 05:41:28,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:28,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261828599] [2020-10-14 05:41:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:28,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:41:28,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:41:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-14 05:41:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:28,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 05:41:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:41:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:28,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:28,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:28,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:28,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:28,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:28,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:28,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:41:28,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:28,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:28,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:41:28,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:28,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:28,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261828599] [2020-10-14 05:41:28,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:28,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:41:28,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993327362] [2020-10-14 05:41:28,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:41:28,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:28,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:41:28,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:28,591 INFO L87 Difference]: Start difference. First operand 968 states and 1385 transitions. Second operand 6 states. [2020-10-14 05:41:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:32,593 INFO L93 Difference]: Finished difference Result 2042 states and 3037 transitions. [2020-10-14 05:41:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:41:32,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-14 05:41:32,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:32,604 INFO L225 Difference]: With dead ends: 2042 [2020-10-14 05:41:32,604 INFO L226 Difference]: Without dead ends: 1641 [2020-10-14 05:41:32,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:41:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2020-10-14 05:41:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1135. [2020-10-14 05:41:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-10-14 05:41:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1675 transitions. [2020-10-14 05:41:32,689 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1675 transitions. Word has length 31 [2020-10-14 05:41:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:32,689 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1675 transitions. [2020-10-14 05:41:32,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:41:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1675 transitions. [2020-10-14 05:41:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:41:32,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:32,691 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] [2020-10-14 05:41:32,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:41:32,692 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash -269643889, now seen corresponding path program 1 times [2020-10-14 05:41:32,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:32,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344006489] [2020-10-14 05:41:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 05:41:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:41:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-14 05:41:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:33,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:41:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:41:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:41:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:33,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:33,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:33,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:41:33,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:33,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:33,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:33,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:33,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:33,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:33,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:33,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:33,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:41:33,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:33,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:41:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:41:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:33,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:41:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:41:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:33,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344006489] [2020-10-14 05:41:33,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:33,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:41:33,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855162332] [2020-10-14 05:41:33,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:41:33,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:33,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:41:33,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:41:33,612 INFO L87 Difference]: Start difference. First operand 1135 states and 1675 transitions. Second operand 9 states. [2020-10-14 05:41:33,865 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-14 05:41:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:37,528 INFO L93 Difference]: Finished difference Result 2078 states and 3120 transitions. [2020-10-14 05:41:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:41:37,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-14 05:41:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:37,538 INFO L225 Difference]: With dead ends: 2078 [2020-10-14 05:41:37,539 INFO L226 Difference]: Without dead ends: 1316 [2020-10-14 05:41:37,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:41:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-10-14 05:41:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1037. [2020-10-14 05:41:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-10-14 05:41:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1487 transitions. [2020-10-14 05:41:37,626 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1487 transitions. Word has length 32 [2020-10-14 05:41:37,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:37,627 INFO L479 AbstractCegarLoop]: Abstraction has 1037 states and 1487 transitions. [2020-10-14 05:41:37,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:41:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1487 transitions. [2020-10-14 05:41:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 05:41:37,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:37,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:41:37,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:41:37,629 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:37,630 INFO L82 PathProgramCache]: Analyzing trace with hash 428268071, now seen corresponding path program 1 times [2020-10-14 05:41:37,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:37,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186520772] [2020-10-14 05:41:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:37,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:37,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:41:37,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 05:41:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:37,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:41:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 05:41:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:41:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:37,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:37,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:37,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:37,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:37,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:37,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:37,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:37,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:37,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:37,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:37,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:37,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:37,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:37,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:41:37,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:37,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:37,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186520772] [2020-10-14 05:41:37,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:37,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:41:37,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026025771] [2020-10-14 05:41:37,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:41:37,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:37,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:41:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:37,987 INFO L87 Difference]: Start difference. First operand 1037 states and 1487 transitions. Second operand 6 states. [2020-10-14 05:41:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:40,843 INFO L93 Difference]: Finished difference Result 1161 states and 1702 transitions. [2020-10-14 05:41:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:40,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-14 05:41:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:40,850 INFO L225 Difference]: With dead ends: 1161 [2020-10-14 05:41:40,850 INFO L226 Difference]: Without dead ends: 1157 [2020-10-14 05:41:40,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:41:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-10-14 05:41:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1036. [2020-10-14 05:41:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-10-14 05:41:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1484 transitions. [2020-10-14 05:41:40,930 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1484 transitions. Word has length 36 [2020-10-14 05:41:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:40,931 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1484 transitions. [2020-10-14 05:41:40,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:41:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1484 transitions. [2020-10-14 05:41:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:41:40,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:40,933 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] [2020-10-14 05:41:40,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:41:40,933 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1410155750, now seen corresponding path program 1 times [2020-10-14 05:41:40,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:40,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762443557] [2020-10-14 05:41:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:41,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:41:41,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:41:41,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-14 05:41:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:41,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:41:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:41:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:41,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:41,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:41,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:41,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:41,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:41:41,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:41,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:41,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:41,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:41,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:41,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:41,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:41,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:41,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:41:41,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:41,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:41,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762443557] [2020-10-14 05:41:41,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:41,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:41:41,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858096175] [2020-10-14 05:41:41,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:41:41,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:41,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:41:41,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:41,813 INFO L87 Difference]: Start difference. First operand 1036 states and 1484 transitions. Second operand 6 states. [2020-10-14 05:41:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:44,918 INFO L93 Difference]: Finished difference Result 1562 states and 2235 transitions. [2020-10-14 05:41:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:44,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-14 05:41:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:44,926 INFO L225 Difference]: With dead ends: 1562 [2020-10-14 05:41:44,927 INFO L226 Difference]: Without dead ends: 1094 [2020-10-14 05:41:44,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:41:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-10-14 05:41:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 875. [2020-10-14 05:41:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-10-14 05:41:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1234 transitions. [2020-10-14 05:41:45,010 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1234 transitions. Word has length 39 [2020-10-14 05:41:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:45,011 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1234 transitions. [2020-10-14 05:41:45,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:41:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1234 transitions. [2020-10-14 05:41:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:41:45,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:45,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:41:45,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:41:45,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1085841368, now seen corresponding path program 1 times [2020-10-14 05:41:45,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:45,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921224666] [2020-10-14 05:41:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:45,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:45,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:41:45,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 05:41:45,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:45,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:41:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:41:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:41:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:45,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:45,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:45,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:45,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:45,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:45,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:41:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:45,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:45,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:45,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:45,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:41:45,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:45,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:41:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:45,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921224666] [2020-10-14 05:41:45,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:45,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:41:45,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569302795] [2020-10-14 05:41:45,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:41:45,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:41:45,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:41:45,484 INFO L87 Difference]: Start difference. First operand 875 states and 1234 transitions. Second operand 6 states. [2020-10-14 05:41:48,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:48,545 INFO L93 Difference]: Finished difference Result 1017 states and 1482 transitions. [2020-10-14 05:41:48,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:41:48,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-14 05:41:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:48,557 INFO L225 Difference]: With dead ends: 1017 [2020-10-14 05:41:48,557 INFO L226 Difference]: Without dead ends: 1014 [2020-10-14 05:41:48,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:41:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-14 05:41:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 874. [2020-10-14 05:41:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-10-14 05:41:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1232 transitions. [2020-10-14 05:41:48,676 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1232 transitions. Word has length 40 [2020-10-14 05:41:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:48,677 INFO L479 AbstractCegarLoop]: Abstraction has 874 states and 1232 transitions. [2020-10-14 05:41:48,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:41:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1232 transitions. [2020-10-14 05:41:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:41:48,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:48,680 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] [2020-10-14 05:41:48,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:41:48,680 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:48,681 INFO L82 PathProgramCache]: Analyzing trace with hash -539598420, now seen corresponding path program 1 times [2020-10-14 05:41:48,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:48,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866582905] [2020-10-14 05:41:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:41:48,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:41:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 05:41:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:48,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:48,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:41:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:41:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:49,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:41:49,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:49,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:49,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:41:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:49,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:49,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:41:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:49,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 05:41:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:49,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:49,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:49,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:41:49,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:49,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:41:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:49,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866582905] [2020-10-14 05:41:49,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:49,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:41:49,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42905446] [2020-10-14 05:41:49,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:41:49,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:41:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:41:49,226 INFO L87 Difference]: Start difference. First operand 874 states and 1232 transitions. Second operand 7 states. [2020-10-14 05:41:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:53,029 INFO L93 Difference]: Finished difference Result 1253 states and 1805 transitions. [2020-10-14 05:41:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:41:53,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-14 05:41:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:53,036 INFO L225 Difference]: With dead ends: 1253 [2020-10-14 05:41:53,036 INFO L226 Difference]: Without dead ends: 1028 [2020-10-14 05:41:53,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:41:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-10-14 05:41:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 874. [2020-10-14 05:41:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-10-14 05:41:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1231 transitions. [2020-10-14 05:41:53,121 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1231 transitions. Word has length 46 [2020-10-14 05:41:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:53,122 INFO L479 AbstractCegarLoop]: Abstraction has 874 states and 1231 transitions. [2020-10-14 05:41:53,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:41:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1231 transitions. [2020-10-14 05:41:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:41:53,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:53,127 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] [2020-10-14 05:41:53,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:41:53,128 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:53,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1793960754, now seen corresponding path program 1 times [2020-10-14 05:41:53,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:53,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965817055] [2020-10-14 05:41:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:53,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:41:53,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:41:53,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-14 05:41:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:53,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:41:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:41:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:53,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:41:53,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:53,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:53,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:53,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:41:53,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:53,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:53,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:53,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:41:53,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:53,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:41:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:53,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:53,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:41:53,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:41:53,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:53,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:41:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:41:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:53,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965817055] [2020-10-14 05:41:53,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:53,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 05:41:53,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259602539] [2020-10-14 05:41:53,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:41:53,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:41:53,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:41:53,966 INFO L87 Difference]: Start difference. First operand 874 states and 1231 transitions. Second operand 8 states. [2020-10-14 05:41:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:41:57,254 INFO L93 Difference]: Finished difference Result 1117 states and 1600 transitions. [2020-10-14 05:41:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:41:57,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-14 05:41:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:41:57,259 INFO L225 Difference]: With dead ends: 1117 [2020-10-14 05:41:57,260 INFO L226 Difference]: Without dead ends: 897 [2020-10-14 05:41:57,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:41:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-14 05:41:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 742. [2020-10-14 05:41:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-14 05:41:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1040 transitions. [2020-10-14 05:41:57,328 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1040 transitions. Word has length 47 [2020-10-14 05:41:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:41:57,328 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 1040 transitions. [2020-10-14 05:41:57,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:41:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1040 transitions. [2020-10-14 05:41:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:41:57,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:41:57,331 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] [2020-10-14 05:41:57,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:41:57,332 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:41:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:41:57,332 INFO L82 PathProgramCache]: Analyzing trace with hash -915524998, now seen corresponding path program 1 times [2020-10-14 05:41:57,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:41:57,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481173769] [2020-10-14 05:41:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:41:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:57,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:57,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:41:57,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:41:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 05:41:57,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:57,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:41:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:57,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:57,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:57,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:57,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:41:57,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:57,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:41:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:57,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:57,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:57,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:41:57,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:57,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:41:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:41:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:57,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:57,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:57,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:41:57,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:57,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:41:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:41:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:41:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:41:57,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:41:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:41:57,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:41:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:41:57,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:41:57,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:41:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:41:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:41:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:41:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:41:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:41:57,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481173769] [2020-10-14 05:41:57,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:41:57,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:41:57,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041142449] [2020-10-14 05:41:57,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:41:57,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:41:57,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:41:57,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:41:57,700 INFO L87 Difference]: Start difference. First operand 742 states and 1040 transitions. Second operand 7 states. [2020-10-14 05:42:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:00,267 INFO L93 Difference]: Finished difference Result 983 states and 1408 transitions. [2020-10-14 05:42:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:42:00,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-14 05:42:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:00,272 INFO L225 Difference]: With dead ends: 983 [2020-10-14 05:42:00,273 INFO L226 Difference]: Without dead ends: 887 [2020-10-14 05:42:00,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:42:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-10-14 05:42:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 741. [2020-10-14 05:42:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-14 05:42:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1035 transitions. [2020-10-14 05:42:00,338 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1035 transitions. Word has length 47 [2020-10-14 05:42:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:00,339 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 1035 transitions. [2020-10-14 05:42:00,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:42:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1035 transitions. [2020-10-14 05:42:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:42:00,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:00,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:00,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:42:00,342 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash 655679991, now seen corresponding path program 1 times [2020-10-14 05:42:00,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:00,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153284745] [2020-10-14 05:42:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:42:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:42:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 05:42:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:00,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:42:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:42:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:00,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:00,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:00,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:00,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:00,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:00,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:00,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:00,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:00,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:00,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:00,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:00,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:00,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:42:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:42:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:00,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:42:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:00,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:42:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:42:00,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:00,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:42:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:00,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153284745] [2020-10-14 05:42:00,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:00,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:42:00,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809804924] [2020-10-14 05:42:00,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:42:00,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:00,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:42:00,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:42:00,815 INFO L87 Difference]: Start difference. First operand 741 states and 1035 transitions. Second operand 7 states. [2020-10-14 05:42:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:04,094 INFO L93 Difference]: Finished difference Result 1061 states and 1522 transitions. [2020-10-14 05:42:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:42:04,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-14 05:42:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:04,101 INFO L225 Difference]: With dead ends: 1061 [2020-10-14 05:42:04,101 INFO L226 Difference]: Without dead ends: 1047 [2020-10-14 05:42:04,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:42:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-10-14 05:42:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 820. [2020-10-14 05:42:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-14 05:42:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1127 transitions. [2020-10-14 05:42:04,181 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1127 transitions. Word has length 48 [2020-10-14 05:42:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:04,183 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1127 transitions. [2020-10-14 05:42:04,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:42:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1127 transitions. [2020-10-14 05:42:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:42:04,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:04,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:04,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:42:04,186 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:04,187 INFO L82 PathProgramCache]: Analyzing trace with hash -704891783, now seen corresponding path program 1 times [2020-10-14 05:42:04,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:04,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188550260] [2020-10-14 05:42:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:04,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:04,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:42:04,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:42:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-14 05:42:04,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:04,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:42:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 05:42:04,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:42:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:04,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:05,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:05,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:42:05,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:05,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:42:05,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:05,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:05,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:42:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:42:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:05,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:05,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:42:05,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:42:05,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:05,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:42:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:42:05,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:42:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:05,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:42:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:05,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188550260] [2020-10-14 05:42:05,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:05,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:42:05,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878462803] [2020-10-14 05:42:05,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:42:05,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:05,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:42:05,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:42:05,172 INFO L87 Difference]: Start difference. First operand 820 states and 1127 transitions. Second operand 9 states. [2020-10-14 05:42:06,745 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 05:42:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:08,790 INFO L93 Difference]: Finished difference Result 1058 states and 1515 transitions. [2020-10-14 05:42:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:42:08,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-14 05:42:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:08,797 INFO L225 Difference]: With dead ends: 1058 [2020-10-14 05:42:08,797 INFO L226 Difference]: Without dead ends: 1047 [2020-10-14 05:42:08,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:42:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-10-14 05:42:08,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 820. [2020-10-14 05:42:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-14 05:42:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1125 transitions. [2020-10-14 05:42:08,875 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1125 transitions. Word has length 49 [2020-10-14 05:42:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:08,876 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1125 transitions. [2020-10-14 05:42:08,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:42:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1125 transitions. [2020-10-14 05:42:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:42:08,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:08,879 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] [2020-10-14 05:42:08,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:42:08,880 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:08,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1017135046, now seen corresponding path program 1 times [2020-10-14 05:42:08,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:08,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112782992] [2020-10-14 05:42:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:09,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:42:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:42:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-14 05:42:09,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:09,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:42:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:42:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:42:09,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:09,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:09,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:09,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:09,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:09,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:09,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:42:09,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:09,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:42:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:09,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:09,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:09,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:42:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:09,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:09,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:42:09,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:42:09,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:09,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:42:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:42:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:42:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:09,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:09,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:42:09,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:42:09,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:09,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:42:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:42:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:42:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:42:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:09,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112782992] [2020-10-14 05:42:09,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:09,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:42:09,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490360650] [2020-10-14 05:42:09,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:42:09,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:09,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:42:09,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:42:09,839 INFO L87 Difference]: Start difference. First operand 820 states and 1125 transitions. Second operand 12 states. [2020-10-14 05:42:09,980 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 05:42:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:13,945 INFO L93 Difference]: Finished difference Result 1098 states and 1543 transitions. [2020-10-14 05:42:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:42:13,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-14 05:42:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:13,951 INFO L225 Difference]: With dead ends: 1098 [2020-10-14 05:42:13,951 INFO L226 Difference]: Without dead ends: 1039 [2020-10-14 05:42:13,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:42:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-14 05:42:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 840. [2020-10-14 05:42:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-14 05:42:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1160 transitions. [2020-10-14 05:42:14,032 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1160 transitions. Word has length 50 [2020-10-14 05:42:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:14,033 INFO L479 AbstractCegarLoop]: Abstraction has 840 states and 1160 transitions. [2020-10-14 05:42:14,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:42:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1160 transitions. [2020-10-14 05:42:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:42:14,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:14,036 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] [2020-10-14 05:42:14,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:42:14,036 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:14,037 INFO L82 PathProgramCache]: Analyzing trace with hash -421895854, now seen corresponding path program 1 times [2020-10-14 05:42:14,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:14,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730223993] [2020-10-14 05:42:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:42:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:42:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 05:42:14,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:14,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:42:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:42:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:14,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:14,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:14,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:14,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:14,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:14,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:42:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:14,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:14,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:14,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:14,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:14,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:42:14,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:42:14,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:14,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:42:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:42:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:14,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:14,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:42:14,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:42:14,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:14,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:42:14,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:42:14,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:14,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730223993] [2020-10-14 05:42:14,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:14,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 05:42:14,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562232033] [2020-10-14 05:42:14,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:42:14,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:14,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:42:14,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:42:14,652 INFO L87 Difference]: Start difference. First operand 840 states and 1160 transitions. Second operand 8 states. [2020-10-14 05:42:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:17,852 INFO L93 Difference]: Finished difference Result 998 states and 1417 transitions. [2020-10-14 05:42:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:42:17,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-14 05:42:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:17,858 INFO L225 Difference]: With dead ends: 998 [2020-10-14 05:42:17,859 INFO L226 Difference]: Without dead ends: 970 [2020-10-14 05:42:17,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:42:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-14 05:42:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 843. [2020-10-14 05:42:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-10-14 05:42:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1164 transitions. [2020-10-14 05:42:17,941 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1164 transitions. Word has length 50 [2020-10-14 05:42:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:17,942 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1164 transitions. [2020-10-14 05:42:17,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:42:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1164 transitions. [2020-10-14 05:42:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:42:17,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:17,945 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] [2020-10-14 05:42:17,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:42:17,945 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1878926736, now seen corresponding path program 1 times [2020-10-14 05:42:17,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:17,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968080834] [2020-10-14 05:42:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:18,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:42:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 05:42:18,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:18,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:42:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:42:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:42:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:18,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:42:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:18,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:42:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:18,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:18,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:42:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:18,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:18,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:42:18,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:42:18,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:18,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:42:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:42:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:42:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:18,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:18,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:42:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:42:18,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:18,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:42:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:42:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:42:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:18,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968080834] [2020-10-14 05:42:18,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:18,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 05:42:18,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504903500] [2020-10-14 05:42:18,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:42:18,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:18,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:42:18,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:42:18,392 INFO L87 Difference]: Start difference. First operand 843 states and 1164 transitions. Second operand 11 states. [2020-10-14 05:42:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:22,348 INFO L93 Difference]: Finished difference Result 1024 states and 1451 transitions. [2020-10-14 05:42:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:42:22,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-14 05:42:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:22,353 INFO L225 Difference]: With dead ends: 1024 [2020-10-14 05:42:22,353 INFO L226 Difference]: Without dead ends: 960 [2020-10-14 05:42:22,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:42:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-14 05:42:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 838. [2020-10-14 05:42:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-14 05:42:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1154 transitions. [2020-10-14 05:42:22,438 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1154 transitions. Word has length 50 [2020-10-14 05:42:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:22,438 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 1154 transitions. [2020-10-14 05:42:22,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:42:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1154 transitions. [2020-10-14 05:42:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:42:22,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:22,442 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] [2020-10-14 05:42:22,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:42:22,442 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:22,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2025619538, now seen corresponding path program 1 times [2020-10-14 05:42:22,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:22,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950778579] [2020-10-14 05:42:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:22,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:22,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:42:22,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:22,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:42:22,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:22,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 05:42:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:42:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:22,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:22,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:22,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:22,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:22,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:22,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:22,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:22,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:22,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:22,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:22,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:22,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:42:22,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:22,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:42:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:42:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:42:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:22,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:42:22,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:42:22,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:22,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:42:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:22,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950778579] [2020-10-14 05:42:22,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:22,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:42:22,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027184824] [2020-10-14 05:42:22,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:42:22,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:42:22,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:42:22,749 INFO L87 Difference]: Start difference. First operand 838 states and 1154 transitions. Second operand 7 states. [2020-10-14 05:42:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:26,300 INFO L93 Difference]: Finished difference Result 1136 states and 1604 transitions. [2020-10-14 05:42:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:42:26,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 05:42:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:26,306 INFO L225 Difference]: With dead ends: 1136 [2020-10-14 05:42:26,306 INFO L226 Difference]: Without dead ends: 1120 [2020-10-14 05:42:26,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:42:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-10-14 05:42:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 894. [2020-10-14 05:42:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-14 05:42:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1214 transitions. [2020-10-14 05:42:26,392 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1214 transitions. Word has length 50 [2020-10-14 05:42:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:26,392 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1214 transitions. [2020-10-14 05:42:26,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:42:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1214 transitions. [2020-10-14 05:42:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:42:26,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:26,395 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] [2020-10-14 05:42:26,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:42:26,395 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:26,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1098118333, now seen corresponding path program 1 times [2020-10-14 05:42:26,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:26,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238493787] [2020-10-14 05:42:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:42:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 05:42:26,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 05:42:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:42:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:26,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:42:26,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:26,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:42:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:42:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:42:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:42:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:42:26,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:42:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:42:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:26,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:42:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:26,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:42:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:26,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238493787] [2020-10-14 05:42:26,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:26,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:42:26,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246866151] [2020-10-14 05:42:26,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:42:26,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:26,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:42:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:42:26,940 INFO L87 Difference]: Start difference. First operand 894 states and 1214 transitions. Second operand 9 states. [2020-10-14 05:42:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:28,972 INFO L93 Difference]: Finished difference Result 1042 states and 1459 transitions. [2020-10-14 05:42:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:42:28,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-14 05:42:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:28,978 INFO L225 Difference]: With dead ends: 1042 [2020-10-14 05:42:28,978 INFO L226 Difference]: Without dead ends: 1037 [2020-10-14 05:42:28,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:42:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-10-14 05:42:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 913. [2020-10-14 05:42:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-14 05:42:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1237 transitions. [2020-10-14 05:42:29,064 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1237 transitions. Word has length 52 [2020-10-14 05:42:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:29,065 INFO L479 AbstractCegarLoop]: Abstraction has 913 states and 1237 transitions. [2020-10-14 05:42:29,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:42:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1237 transitions. [2020-10-14 05:42:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:42:29,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:29,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:29,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:42:29,070 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1807495809, now seen corresponding path program 1 times [2020-10-14 05:42:29,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:29,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831520535] [2020-10-14 05:42:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:42:29,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:42:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 05:42:29,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:29,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 05:42:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:42:29,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:29,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:42:29,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:29,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:29,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:29,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:29,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 05:42:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:42:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:42:29,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:29,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:42:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:29,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:29,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:42:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:29,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831520535] [2020-10-14 05:42:29,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:29,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 05:42:29,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393617584] [2020-10-14 05:42:29,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:42:29,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:29,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:42:29,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:42:29,706 INFO L87 Difference]: Start difference. First operand 913 states and 1237 transitions. Second operand 8 states. [2020-10-14 05:42:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:33,157 INFO L93 Difference]: Finished difference Result 1249 states and 1741 transitions. [2020-10-14 05:42:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:42:33,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-14 05:42:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:33,164 INFO L225 Difference]: With dead ends: 1249 [2020-10-14 05:42:33,164 INFO L226 Difference]: Without dead ends: 1002 [2020-10-14 05:42:33,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:42:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-14 05:42:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 882. [2020-10-14 05:42:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-14 05:42:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1197 transitions. [2020-10-14 05:42:33,253 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1197 transitions. Word has length 54 [2020-10-14 05:42:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:33,254 INFO L479 AbstractCegarLoop]: Abstraction has 882 states and 1197 transitions. [2020-10-14 05:42:33,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:42:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1197 transitions. [2020-10-14 05:42:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:42:33,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:33,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:33,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:42:33,258 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:33,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:33,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1186438786, now seen corresponding path program 1 times [2020-10-14 05:42:33,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:33,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082901509] [2020-10-14 05:42:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:42:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 05:42:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:33,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:42:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 05:42:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:42:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:33,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:33,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:42:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:33,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:33,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:33,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:33,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:33,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:33,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:33,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:33,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:33,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:33,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:33,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:42:33,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:33,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:33,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:42:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:42:33,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:42:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:42:33,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:33,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:42:33,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:42:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:33,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:42:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:42:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:33,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082901509] [2020-10-14 05:42:33,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:33,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:42:33,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349469137] [2020-10-14 05:42:33,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:42:33,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:33,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:42:33,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:42:33,916 INFO L87 Difference]: Start difference. First operand 882 states and 1197 transitions. Second operand 12 states. [2020-10-14 05:42:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:38,312 INFO L93 Difference]: Finished difference Result 1017 states and 1427 transitions. [2020-10-14 05:42:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:42:38,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-14 05:42:38,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:38,323 INFO L225 Difference]: With dead ends: 1017 [2020-10-14 05:42:38,323 INFO L226 Difference]: Without dead ends: 1013 [2020-10-14 05:42:38,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:42:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-14 05:42:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 889. [2020-10-14 05:42:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-14 05:42:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1206 transitions. [2020-10-14 05:42:38,400 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1206 transitions. Word has length 51 [2020-10-14 05:42:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:38,400 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1206 transitions. [2020-10-14 05:42:38,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:42:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1206 transitions. [2020-10-14 05:42:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:42:38,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:38,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:38,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:42:38,403 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:38,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1186715616, now seen corresponding path program 1 times [2020-10-14 05:42:38,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:38,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961316274] [2020-10-14 05:42:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:39,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:39,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:42:39,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:42:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 05:42:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:39,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:42:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 05:42:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:39,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:39,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:39,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:39,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:39,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:42:39,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:39,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:42:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:39,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:39,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:39,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:39,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:39,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:42:39,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:39,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:42:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:39,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:39,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:42:39,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:42:39,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:39,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:42:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:39,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:42:39,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:42:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:39,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:42:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:39,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961316274] [2020-10-14 05:42:39,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:39,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 05:42:39,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20268688] [2020-10-14 05:42:39,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:42:39,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:42:39,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:42:39,321 INFO L87 Difference]: Start difference. First operand 889 states and 1206 transitions. Second operand 10 states. [2020-10-14 05:42:41,040 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 05:42:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:43,552 INFO L93 Difference]: Finished difference Result 1024 states and 1434 transitions. [2020-10-14 05:42:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:42:43,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-14 05:42:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:43,560 INFO L225 Difference]: With dead ends: 1024 [2020-10-14 05:42:43,561 INFO L226 Difference]: Without dead ends: 987 [2020-10-14 05:42:43,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:42:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-10-14 05:42:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 861. [2020-10-14 05:42:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-10-14 05:42:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1173 transitions. [2020-10-14 05:42:43,652 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1173 transitions. Word has length 51 [2020-10-14 05:42:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:43,652 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1173 transitions. [2020-10-14 05:42:43,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:42:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1173 transitions. [2020-10-14 05:42:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:42:43,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:43,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:43,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:42:43,655 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:43,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1504546088, now seen corresponding path program 1 times [2020-10-14 05:42:43,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:43,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248502544] [2020-10-14 05:42:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:42:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:42:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-14 05:42:44,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:42:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:42:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:42:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:44,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:44,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:44,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:44,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:44,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:42:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:44,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:44,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:42:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:42:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:42:44,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:42:44,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:42:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:42:44,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:42:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:44,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:44,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:44,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:44,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:42:44,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:44,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:44,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:44,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248502544] [2020-10-14 05:42:44,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:44,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 05:42:44,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898343744] [2020-10-14 05:42:44,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:42:44,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:42:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:42:44,617 INFO L87 Difference]: Start difference. First operand 861 states and 1173 transitions. Second operand 10 states. [2020-10-14 05:42:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:47,352 INFO L93 Difference]: Finished difference Result 1088 states and 1538 transitions. [2020-10-14 05:42:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:42:47,353 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-14 05:42:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:47,359 INFO L225 Difference]: With dead ends: 1088 [2020-10-14 05:42:47,360 INFO L226 Difference]: Without dead ends: 1082 [2020-10-14 05:42:47,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:42:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-14 05:42:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 858. [2020-10-14 05:42:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-14 05:42:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1167 transitions. [2020-10-14 05:42:47,439 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1167 transitions. Word has length 54 [2020-10-14 05:42:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:47,439 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1167 transitions. [2020-10-14 05:42:47,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:42:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1167 transitions. [2020-10-14 05:42:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:42:47,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:47,442 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] [2020-10-14 05:42:47,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:42:47,442 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:47,443 INFO L82 PathProgramCache]: Analyzing trace with hash -291565544, now seen corresponding path program 1 times [2020-10-14 05:42:47,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:47,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961899381] [2020-10-14 05:42:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:42:47,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 05:42:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:47,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:42:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 05:42:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:42:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:47,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:47,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:47,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:47,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:47,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:47,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:47,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:47,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:47,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:47,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:47,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:47,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:42:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:48,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:42:48,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:42:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:48,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:42:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:42:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:48,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:48,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:48,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:42:48,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:48,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:42:48,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:48,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:42:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:42:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:42:48,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:42:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:48,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:42:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:42:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:48,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961899381] [2020-10-14 05:42:48,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:48,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:42:48,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680430347] [2020-10-14 05:42:48,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:42:48,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:48,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:42:48,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:42:48,246 INFO L87 Difference]: Start difference. First operand 858 states and 1167 transitions. Second operand 15 states. [2020-10-14 05:42:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:51,945 INFO L93 Difference]: Finished difference Result 1005 states and 1410 transitions. [2020-10-14 05:42:51,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:42:51,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-14 05:42:51,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:51,954 INFO L225 Difference]: With dead ends: 1005 [2020-10-14 05:42:51,954 INFO L226 Difference]: Without dead ends: 978 [2020-10-14 05:42:51,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:42:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-14 05:42:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 858. [2020-10-14 05:42:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-14 05:42:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1165 transitions. [2020-10-14 05:42:52,059 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1165 transitions. Word has length 55 [2020-10-14 05:42:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:52,059 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1165 transitions. [2020-10-14 05:42:52,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:42:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1165 transitions. [2020-10-14 05:42:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:42:52,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:52,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:52,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:42:52,063 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:52,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:52,063 INFO L82 PathProgramCache]: Analyzing trace with hash 100740086, now seen corresponding path program 1 times [2020-10-14 05:42:52,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:52,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093217621] [2020-10-14 05:42:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:42:52,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-14 05:42:52,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:42:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 05:42:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:42:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:52,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:52,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:42:52,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:52,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:42:52,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:42:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:42:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:42:52,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 05:42:52,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:42:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:42:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:42:52,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:42:52,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:42:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:42:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:52,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:52,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:52,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:42:52,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:42:52,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:52,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:42:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:42:52,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:52,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093217621] [2020-10-14 05:42:52,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:52,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:42:52,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974444081] [2020-10-14 05:42:52,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:42:52,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:52,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:42:52,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:42:52,991 INFO L87 Difference]: Start difference. First operand 858 states and 1165 transitions. Second operand 15 states. [2020-10-14 05:42:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:42:57,691 INFO L93 Difference]: Finished difference Result 994 states and 1395 transitions. [2020-10-14 05:42:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:42:57,692 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-14 05:42:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:42:57,698 INFO L225 Difference]: With dead ends: 994 [2020-10-14 05:42:57,698 INFO L226 Difference]: Without dead ends: 976 [2020-10-14 05:42:57,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:42:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-14 05:42:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 856. [2020-10-14 05:42:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-10-14 05:42:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1161 transitions. [2020-10-14 05:42:57,790 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1161 transitions. Word has length 55 [2020-10-14 05:42:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:42:57,791 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1161 transitions. [2020-10-14 05:42:57,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:42:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1161 transitions. [2020-10-14 05:42:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:42:57,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:42:57,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:42:57,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:42:57,794 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:42:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:42:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2119637056, now seen corresponding path program 1 times [2020-10-14 05:42:57,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:42:57,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748130769] [2020-10-14 05:42:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:42:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:42:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 05:42:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:42:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 05:42:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:42:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:42:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:58,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:42:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:42:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:42:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:42:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:42:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:42:58,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:42:58,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:42:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:42:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:42:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:42:58,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:42:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:42:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:42:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:42:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:42:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:42:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:42:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:42:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:42:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:42:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:42:58,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:42:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:42:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:42:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:42:58,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:42:58,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:42:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:42:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:42:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:42:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:42:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:42:58,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748130769] [2020-10-14 05:42:58,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:42:58,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:42:58,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568559534] [2020-10-14 05:42:58,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:42:58,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:42:58,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:42:58,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:42:58,513 INFO L87 Difference]: Start difference. First operand 856 states and 1161 transitions. Second operand 15 states. [2020-10-14 05:43:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:02,335 INFO L93 Difference]: Finished difference Result 989 states and 1388 transitions. [2020-10-14 05:43:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:43:02,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-14 05:43:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:02,341 INFO L225 Difference]: With dead ends: 989 [2020-10-14 05:43:02,342 INFO L226 Difference]: Without dead ends: 971 [2020-10-14 05:43:02,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:43:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-14 05:43:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 851. [2020-10-14 05:43:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-10-14 05:43:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1154 transitions. [2020-10-14 05:43:02,423 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1154 transitions. Word has length 56 [2020-10-14 05:43:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:02,423 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1154 transitions. [2020-10-14 05:43:02,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:43:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1154 transitions. [2020-10-14 05:43:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 05:43:02,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:02,427 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:43:02,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:43:02,427 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash -566046716, now seen corresponding path program 1 times [2020-10-14 05:43:02,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:02,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997380355] [2020-10-14 05:43:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:03,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:03,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:06,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:06,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 05:43:06,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:43:06,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-10-14 05:43:06,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:06,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:43:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:43:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 05:43:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:06,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:06,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:06,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:43:06,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:06,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:06,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:06,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:06,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:06,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:06,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:43:06,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:06,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:43:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:06,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:06,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:06,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:06,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:06,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:06,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:43:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:43:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:06,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:06,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:43:06,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:43:06,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:06,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:43:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:43:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:06,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:07,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:07,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:43:07,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:43:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 05:43:07,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:07,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:43:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:43:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:43:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:07,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:43:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:07,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:07,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:07,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:07,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:07,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:43:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:07,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:07,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:07,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:07,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:07,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:07,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997380355] [2020-10-14 05:43:07,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:43:07,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:43:07,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104619335] [2020-10-14 05:43:07,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:43:07,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:07,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:43:07,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:43:07,089 INFO L87 Difference]: Start difference. First operand 851 states and 1154 transitions. Second operand 12 states. [2020-10-14 05:43:08,984 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-14 05:43:11,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:11,784 INFO L93 Difference]: Finished difference Result 1558 states and 2249 transitions. [2020-10-14 05:43:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:43:11,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-10-14 05:43:11,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:11,790 INFO L225 Difference]: With dead ends: 1558 [2020-10-14 05:43:11,790 INFO L226 Difference]: Without dead ends: 1394 [2020-10-14 05:43:11,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:43:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-14 05:43:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 899. [2020-10-14 05:43:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-10-14 05:43:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1221 transitions. [2020-10-14 05:43:11,899 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1221 transitions. Word has length 73 [2020-10-14 05:43:11,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:11,899 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1221 transitions. [2020-10-14 05:43:11,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:43:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1221 transitions. [2020-10-14 05:43:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:43:11,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:11,902 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] [2020-10-14 05:43:11,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:43:11,902 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:11,902 INFO L82 PathProgramCache]: Analyzing trace with hash -534409564, now seen corresponding path program 1 times [2020-10-14 05:43:11,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:11,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712955032] [2020-10-14 05:43:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:12,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:12,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:43:12,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:43:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-14 05:43:12,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:12,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 05:43:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:12,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:13,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:13,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:13,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:13,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:13,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:13,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:13,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:13,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:13,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:13,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:13,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:43:13,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:43:13,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:13,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:43:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:13,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:13,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:13,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:43:13,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:43:13,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:13,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:43:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:43:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:13,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:13,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:43:13,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:43:13,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:13,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:43:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:43:13,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:13,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:13,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712955032] [2020-10-14 05:43:13,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:13,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:43:13,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814784717] [2020-10-14 05:43:13,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:43:13,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:13,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:43:13,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:43:13,398 INFO L87 Difference]: Start difference. First operand 899 states and 1221 transitions. Second operand 12 states. [2020-10-14 05:43:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:17,150 INFO L93 Difference]: Finished difference Result 1055 states and 1486 transitions. [2020-10-14 05:43:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:43:17,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-14 05:43:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:17,155 INFO L225 Difference]: With dead ends: 1055 [2020-10-14 05:43:17,155 INFO L226 Difference]: Without dead ends: 1029 [2020-10-14 05:43:17,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:43:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-10-14 05:43:17,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 905. [2020-10-14 05:43:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-14 05:43:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1235 transitions. [2020-10-14 05:43:17,242 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1235 transitions. Word has length 59 [2020-10-14 05:43:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:17,242 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1235 transitions. [2020-10-14 05:43:17,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:43:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1235 transitions. [2020-10-14 05:43:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:43:17,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:17,244 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] [2020-10-14 05:43:17,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:43:17,245 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1736083249, now seen corresponding path program 1 times [2020-10-14 05:43:17,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592367963] [2020-10-14 05:43:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:43:18,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:43:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-14 05:43:18,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:43:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:18,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:18,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:18,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:43:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 05:43:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:43:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:43:18,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 05:43:18,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:43:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 05:43:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:43:18,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:43:18,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:43:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:43:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:18,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:18,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:18,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:43:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:18,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:18,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592367963] [2020-10-14 05:43:18,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:18,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:43:18,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539969300] [2020-10-14 05:43:18,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:43:18,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:43:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:43:18,641 INFO L87 Difference]: Start difference. First operand 905 states and 1235 transitions. Second operand 12 states. [2020-10-14 05:43:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:21,597 INFO L93 Difference]: Finished difference Result 1056 states and 1487 transitions. [2020-10-14 05:43:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:43:21,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-14 05:43:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:21,601 INFO L225 Difference]: With dead ends: 1056 [2020-10-14 05:43:21,601 INFO L226 Difference]: Without dead ends: 1030 [2020-10-14 05:43:21,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:43:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-10-14 05:43:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 905. [2020-10-14 05:43:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-14 05:43:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1235 transitions. [2020-10-14 05:43:21,705 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1235 transitions. Word has length 62 [2020-10-14 05:43:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:21,705 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1235 transitions. [2020-10-14 05:43:21,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:43:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1235 transitions. [2020-10-14 05:43:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:43:21,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:21,708 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] [2020-10-14 05:43:21,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:43:21,709 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1414168916, now seen corresponding path program 1 times [2020-10-14 05:43:21,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:21,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385710046] [2020-10-14 05:43:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:21,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:23,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:23,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:23,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:23,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:23,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:23,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:23,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:23,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:23,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:23,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:23,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:23,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:23,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:23,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:23,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:23,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:23,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:23,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:23,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:23,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 05:43:23,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:43:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 05:43:23,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:23,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:23,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:23,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:43:23,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:23,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:24,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:43:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:43:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 05:43:24,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:24,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:43:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:24,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:24,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:43:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:24,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:43:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:43:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:24,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385710046] [2020-10-14 05:43:24,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:24,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 05:43:24,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722062808] [2020-10-14 05:43:24,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:43:24,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:24,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:43:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:43:24,380 INFO L87 Difference]: Start difference. First operand 905 states and 1235 transitions. Second operand 13 states. [2020-10-14 05:43:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:27,912 INFO L93 Difference]: Finished difference Result 1057 states and 1490 transitions. [2020-10-14 05:43:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:43:27,913 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-14 05:43:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:27,917 INFO L225 Difference]: With dead ends: 1057 [2020-10-14 05:43:27,918 INFO L226 Difference]: Without dead ends: 1031 [2020-10-14 05:43:27,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:43:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-14 05:43:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 905. [2020-10-14 05:43:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-14 05:43:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1235 transitions. [2020-10-14 05:43:28,002 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1235 transitions. Word has length 64 [2020-10-14 05:43:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:28,002 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1235 transitions. [2020-10-14 05:43:28,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:43:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1235 transitions. [2020-10-14 05:43:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:43:28,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:28,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:43:28,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:43:28,004 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:28,005 INFO L82 PathProgramCache]: Analyzing trace with hash -897434082, now seen corresponding path program 1 times [2020-10-14 05:43:28,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:28,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749249467] [2020-10-14 05:43:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:28,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:43:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:28,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:28,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:28,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:28,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:28,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:28,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:28,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:28,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:28,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:28,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:28,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:28,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:28,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:43:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:29,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:29,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:43:29,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:29,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 05:43:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:43:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:29,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:29,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:29,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:29,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749249467] [2020-10-14 05:43:29,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:29,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:43:29,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176087637] [2020-10-14 05:43:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:43:29,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:43:29,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:43:29,165 INFO L87 Difference]: Start difference. First operand 905 states and 1235 transitions. Second operand 12 states. [2020-10-14 05:43:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:32,890 INFO L93 Difference]: Finished difference Result 1056 states and 1485 transitions. [2020-10-14 05:43:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:43:32,892 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-14 05:43:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:32,896 INFO L225 Difference]: With dead ends: 1056 [2020-10-14 05:43:32,896 INFO L226 Difference]: Without dead ends: 1028 [2020-10-14 05:43:32,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:43:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-10-14 05:43:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 905. [2020-10-14 05:43:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-14 05:43:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1232 transitions. [2020-10-14 05:43:32,978 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1232 transitions. Word has length 62 [2020-10-14 05:43:32,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:32,979 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1232 transitions. [2020-10-14 05:43:32,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:43:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1232 transitions. [2020-10-14 05:43:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:43:32,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:32,980 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] [2020-10-14 05:43:32,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:43:32,981 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:32,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:32,981 INFO L82 PathProgramCache]: Analyzing trace with hash 167190310, now seen corresponding path program 1 times [2020-10-14 05:43:32,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:32,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608151357] [2020-10-14 05:43:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:43:33,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 05:43:33,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:43:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 05:43:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:43:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:33,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:33,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:43:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:43:33,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:43:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:43:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:43:33,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:43:33,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:43:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:43:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:43:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:33,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:33,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:33,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:33,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608151357] [2020-10-14 05:43:33,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:33,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 05:43:33,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653460332] [2020-10-14 05:43:33,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:43:33,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:33,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:43:33,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:43:33,848 INFO L87 Difference]: Start difference. First operand 905 states and 1232 transitions. Second operand 19 states. [2020-10-14 05:43:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:38,386 INFO L93 Difference]: Finished difference Result 1051 states and 1478 transitions. [2020-10-14 05:43:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:43:38,387 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-14 05:43:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:38,390 INFO L225 Difference]: With dead ends: 1051 [2020-10-14 05:43:38,390 INFO L226 Difference]: Without dead ends: 1026 [2020-10-14 05:43:38,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:43:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-14 05:43:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 905. [2020-10-14 05:43:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-14 05:43:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1229 transitions. [2020-10-14 05:43:38,494 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1229 transitions. Word has length 59 [2020-10-14 05:43:38,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:38,495 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1229 transitions. [2020-10-14 05:43:38,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:43:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1229 transitions. [2020-10-14 05:43:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:43:38,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:38,497 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] [2020-10-14 05:43:38,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:43:38,498 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:38,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:38,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1190823714, now seen corresponding path program 1 times [2020-10-14 05:43:38,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:38,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246269101] [2020-10-14 05:43:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:43:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 05:43:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:38,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:43:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 05:43:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:43:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:38,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:38,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:38,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:38,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:38,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:38,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:38,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:38,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:38,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:43:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:43:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:38,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:43:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:43:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:39,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:43:39,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:43:39,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:39,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:43:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:39,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246269101] [2020-10-14 05:43:39,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:39,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-14 05:43:39,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729163446] [2020-10-14 05:43:39,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:43:39,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:39,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:43:39,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:43:39,067 INFO L87 Difference]: Start difference. First operand 905 states and 1229 transitions. Second operand 16 states. [2020-10-14 05:43:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:43,108 INFO L93 Difference]: Finished difference Result 1043 states and 1464 transitions. [2020-10-14 05:43:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:43:43,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-14 05:43:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:43,112 INFO L225 Difference]: With dead ends: 1043 [2020-10-14 05:43:43,112 INFO L226 Difference]: Without dead ends: 1023 [2020-10-14 05:43:43,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:43:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-14 05:43:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 902. [2020-10-14 05:43:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-14 05:43:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1224 transitions. [2020-10-14 05:43:43,205 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1224 transitions. Word has length 58 [2020-10-14 05:43:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:43,205 INFO L479 AbstractCegarLoop]: Abstraction has 902 states and 1224 transitions. [2020-10-14 05:43:43,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:43:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1224 transitions. [2020-10-14 05:43:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:43:43,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:43,207 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] [2020-10-14 05:43:43,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:43:43,207 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:43,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash -59454133, now seen corresponding path program 1 times [2020-10-14 05:43:43,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:43,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232414589] [2020-10-14 05:43:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:43:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:43:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:43,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:43,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:43,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:43:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:43:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:43:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:43:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:43:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:43:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:43,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:43,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:43,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:43,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:43,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:43,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:43,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232414589] [2020-10-14 05:43:43,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:43,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:43:43,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047964345] [2020-10-14 05:43:43,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:43:43,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:43,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:43:43,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:43:43,828 INFO L87 Difference]: Start difference. First operand 902 states and 1224 transitions. Second operand 15 states. [2020-10-14 05:43:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:47,917 INFO L93 Difference]: Finished difference Result 1054 states and 1477 transitions. [2020-10-14 05:43:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:43:47,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-14 05:43:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:47,923 INFO L225 Difference]: With dead ends: 1054 [2020-10-14 05:43:47,923 INFO L226 Difference]: Without dead ends: 1023 [2020-10-14 05:43:47,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:43:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-14 05:43:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 902. [2020-10-14 05:43:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-14 05:43:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1222 transitions. [2020-10-14 05:43:48,031 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1222 transitions. Word has length 59 [2020-10-14 05:43:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:48,031 INFO L479 AbstractCegarLoop]: Abstraction has 902 states and 1222 transitions. [2020-10-14 05:43:48,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:43:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1222 transitions. [2020-10-14 05:43:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:43:48,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:48,034 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] [2020-10-14 05:43:48,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:43:48,034 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:48,035 INFO L82 PathProgramCache]: Analyzing trace with hash -109492812, now seen corresponding path program 1 times [2020-10-14 05:43:48,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:48,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721265803] [2020-10-14 05:43:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 05:43:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:43:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 05:43:48,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:43:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:43:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:43:48,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:43:48,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:43:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:43:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:43:48,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:43:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:43:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:43:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:43:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:48,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:48,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:43:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:48,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721265803] [2020-10-14 05:43:48,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:48,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:43:48,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484052442] [2020-10-14 05:43:48,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:43:48,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:48,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:43:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:43:48,554 INFO L87 Difference]: Start difference. First operand 902 states and 1222 transitions. Second operand 9 states. [2020-10-14 05:43:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:50,667 INFO L93 Difference]: Finished difference Result 1057 states and 1472 transitions. [2020-10-14 05:43:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:43:50,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 05:43:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:50,674 INFO L225 Difference]: With dead ends: 1057 [2020-10-14 05:43:50,674 INFO L226 Difference]: Without dead ends: 1025 [2020-10-14 05:43:50,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:43:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-14 05:43:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 902. [2020-10-14 05:43:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-14 05:43:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1221 transitions. [2020-10-14 05:43:50,781 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1221 transitions. Word has length 59 [2020-10-14 05:43:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:50,781 INFO L479 AbstractCegarLoop]: Abstraction has 902 states and 1221 transitions. [2020-10-14 05:43:50,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:43:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1221 transitions. [2020-10-14 05:43:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:43:50,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:50,784 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] [2020-10-14 05:43:50,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:43:50,784 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:50,785 INFO L82 PathProgramCache]: Analyzing trace with hash -618965902, now seen corresponding path program 1 times [2020-10-14 05:43:50,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:50,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214720554] [2020-10-14 05:43:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:43:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:43:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:51,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:51,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:43:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:43:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:43:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:43:51,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:43:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:43:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:43:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:43:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:43:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:51,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214720554] [2020-10-14 05:43:51,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:51,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:43:51,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976414717] [2020-10-14 05:43:51,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:43:51,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:51,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:43:51,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:43:51,421 INFO L87 Difference]: Start difference. First operand 902 states and 1221 transitions. Second operand 15 states. [2020-10-14 05:43:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:55,187 INFO L93 Difference]: Finished difference Result 1045 states and 1460 transitions. [2020-10-14 05:43:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:43:55,187 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-14 05:43:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:55,191 INFO L225 Difference]: With dead ends: 1045 [2020-10-14 05:43:55,191 INFO L226 Difference]: Without dead ends: 1008 [2020-10-14 05:43:55,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:43:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-14 05:43:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 890. [2020-10-14 05:43:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-10-14 05:43:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1201 transitions. [2020-10-14 05:43:55,264 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1201 transitions. Word has length 59 [2020-10-14 05:43:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:55,264 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1201 transitions. [2020-10-14 05:43:55,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:43:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1201 transitions. [2020-10-14 05:43:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:43:55,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:55,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:43:55,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:43:55,266 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:55,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2110252174, now seen corresponding path program 1 times [2020-10-14 05:43:55,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:55,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905155687] [2020-10-14 05:43:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:43:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 05:43:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:43:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:43:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:55,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:55,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:55,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:55,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:55,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:55,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:43:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:55,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:55,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:43:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:55,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:55,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:43:55,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:43:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:56,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:56,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:43:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:43:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:43:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:43:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:43:56,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:43:56,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:56,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:43:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:43:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:43:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:56,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:43:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:43:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:43:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:56,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:43:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:43:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:43:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:43:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:43:56,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:43:56,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:43:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:43:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:43:56,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:43:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:43:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:43:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:43:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:43:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:43:56,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905155687] [2020-10-14 05:43:56,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:43:56,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 05:43:56,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11317414] [2020-10-14 05:43:56,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:43:56,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:43:56,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:43:56,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:43:56,192 INFO L87 Difference]: Start difference. First operand 890 states and 1201 transitions. Second operand 11 states. [2020-10-14 05:43:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:43:59,398 INFO L93 Difference]: Finished difference Result 1181 states and 1680 transitions. [2020-10-14 05:43:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:43:59,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-14 05:43:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:43:59,402 INFO L225 Difference]: With dead ends: 1181 [2020-10-14 05:43:59,402 INFO L226 Difference]: Without dead ends: 1065 [2020-10-14 05:43:59,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:43:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-10-14 05:43:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 897. [2020-10-14 05:43:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-14 05:43:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1217 transitions. [2020-10-14 05:43:59,532 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1217 transitions. Word has length 60 [2020-10-14 05:43:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:43:59,532 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1217 transitions. [2020-10-14 05:43:59,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:43:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1217 transitions. [2020-10-14 05:43:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:43:59,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:43:59,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:43:59,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:43:59,535 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:43:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:43:59,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1909955508, now seen corresponding path program 1 times [2020-10-14 05:43:59,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:43:59,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169341317] [2020-10-14 05:43:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:43:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:43:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:43:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 05:44:00,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:44:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-14 05:44:00,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:44:00,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:44:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:44:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:44:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:44:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:00,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:00,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:44:00,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:44:00,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:44:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:44:00,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:44:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:44:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:44:00,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:44:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:44:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:44:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:00,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:44:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:44:00,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:44:00,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:44:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:44:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:00,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:00,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:00,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:00,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:00,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:00,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:00,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169341317] [2020-10-14 05:44:00,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:00,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 05:44:00,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174177999] [2020-10-14 05:44:00,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:44:00,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:00,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:44:00,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:44:00,490 INFO L87 Difference]: Start difference. First operand 897 states and 1217 transitions. Second operand 18 states. [2020-10-14 05:44:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:04,765 INFO L93 Difference]: Finished difference Result 1088 states and 1543 transitions. [2020-10-14 05:44:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:44:04,767 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-14 05:44:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:04,771 INFO L225 Difference]: With dead ends: 1088 [2020-10-14 05:44:04,771 INFO L226 Difference]: Without dead ends: 1033 [2020-10-14 05:44:04,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:44:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-14 05:44:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 901. [2020-10-14 05:44:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-14 05:44:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1235 transitions. [2020-10-14 05:44:04,876 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1235 transitions. Word has length 60 [2020-10-14 05:44:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:04,876 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1235 transitions. [2020-10-14 05:44:04,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:44:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1235 transitions. [2020-10-14 05:44:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:44:04,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:04,878 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] [2020-10-14 05:44:04,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:44:04,878 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:04,879 INFO L82 PathProgramCache]: Analyzing trace with hash 118085165, now seen corresponding path program 1 times [2020-10-14 05:44:04,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:04,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404705339] [2020-10-14 05:44:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:44:05,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:44:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 05:44:05,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:44:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:44:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:44:05,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:05,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:05,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:05,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:05,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:44:05,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:44:05,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:44:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:44:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:44:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:44:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:44:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:44:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:44:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:05,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:44:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:05,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404705339] [2020-10-14 05:44:05,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:05,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:44:05,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744354300] [2020-10-14 05:44:05,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:44:05,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:05,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:44:05,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:44:05,648 INFO L87 Difference]: Start difference. First operand 901 states and 1235 transitions. Second operand 9 states. [2020-10-14 05:44:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:07,536 INFO L93 Difference]: Finished difference Result 1057 states and 1499 transitions. [2020-10-14 05:44:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:44:07,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 05:44:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:07,541 INFO L225 Difference]: With dead ends: 1057 [2020-10-14 05:44:07,542 INFO L226 Difference]: Without dead ends: 1025 [2020-10-14 05:44:07,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:44:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-14 05:44:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 901. [2020-10-14 05:44:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-14 05:44:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1234 transitions. [2020-10-14 05:44:07,647 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1234 transitions. Word has length 60 [2020-10-14 05:44:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:07,647 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1234 transitions. [2020-10-14 05:44:07,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:44:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1234 transitions. [2020-10-14 05:44:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:44:07,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:07,649 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] [2020-10-14 05:44:07,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:44:07,649 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:07,649 INFO L82 PathProgramCache]: Analyzing trace with hash -391387925, now seen corresponding path program 1 times [2020-10-14 05:44:07,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:07,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632849678] [2020-10-14 05:44:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:07,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:44:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 05:44:07,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:07,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:44:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:44:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:44:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:07,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:07,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:44:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:07,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:07,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:07,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:07,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:44:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:08,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:44:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:44:08,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:08,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:44:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:44:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:08,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:08,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:08,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:08,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:08,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:08,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:44:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:08,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632849678] [2020-10-14 05:44:08,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:08,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:44:08,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486842527] [2020-10-14 05:44:08,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:44:08,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:08,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:44:08,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:44:08,230 INFO L87 Difference]: Start difference. First operand 901 states and 1234 transitions. Second operand 15 states. [2020-10-14 05:44:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:12,218 INFO L93 Difference]: Finished difference Result 1062 states and 1514 transitions. [2020-10-14 05:44:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:44:12,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 05:44:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:12,223 INFO L225 Difference]: With dead ends: 1062 [2020-10-14 05:44:12,223 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 05:44:12,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:44:12,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 05:44:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 893. [2020-10-14 05:44:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-14 05:44:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1219 transitions. [2020-10-14 05:44:12,305 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1219 transitions. Word has length 60 [2020-10-14 05:44:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:12,305 INFO L479 AbstractCegarLoop]: Abstraction has 893 states and 1219 transitions. [2020-10-14 05:44:12,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:44:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1219 transitions. [2020-10-14 05:44:12,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:44:12,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:12,308 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] [2020-10-14 05:44:12,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:44:12,309 INFO L427 AbstractCegarLoop]: === Iteration 41 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:12,309 INFO L82 PathProgramCache]: Analyzing trace with hash -245462945, now seen corresponding path program 1 times [2020-10-14 05:44:12,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:12,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999793891] [2020-10-14 05:44:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:44:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:44:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:12,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:12,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:12,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:12,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:44:12,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:44:12,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:44:12,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:44:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:44:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:44:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:12,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:12,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:12,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:12,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:12,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:44:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:12,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999793891] [2020-10-14 05:44:12,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:12,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:44:12,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621801821] [2020-10-14 05:44:12,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:44:12,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:12,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:44:12,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:44:12,751 INFO L87 Difference]: Start difference. First operand 893 states and 1219 transitions. Second operand 9 states. [2020-10-14 05:44:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:14,786 INFO L93 Difference]: Finished difference Result 1046 states and 1475 transitions. [2020-10-14 05:44:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:44:14,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 05:44:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:14,791 INFO L225 Difference]: With dead ends: 1046 [2020-10-14 05:44:14,791 INFO L226 Difference]: Without dead ends: 1014 [2020-10-14 05:44:14,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:44:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-14 05:44:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 893. [2020-10-14 05:44:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-14 05:44:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1218 transitions. [2020-10-14 05:44:14,865 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1218 transitions. Word has length 60 [2020-10-14 05:44:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:14,866 INFO L479 AbstractCegarLoop]: Abstraction has 893 states and 1218 transitions. [2020-10-14 05:44:14,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:44:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1218 transitions. [2020-10-14 05:44:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:44:14,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:14,868 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] [2020-10-14 05:44:14,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:44:14,868 INFO L427 AbstractCegarLoop]: === Iteration 42 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash -754936035, now seen corresponding path program 1 times [2020-10-14 05:44:14,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:14,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726725285] [2020-10-14 05:44:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:44:15,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:44:15,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:15,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:15,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:15,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:15,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:15,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:44:15,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:44:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:44:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:44:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:15,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:15,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:44:15,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:44:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:15,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:15,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726725285] [2020-10-14 05:44:15,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:15,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:44:15,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780796651] [2020-10-14 05:44:15,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:44:15,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:15,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:44:15,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:44:15,426 INFO L87 Difference]: Start difference. First operand 893 states and 1218 transitions. Second operand 15 states. [2020-10-14 05:44:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:19,266 INFO L93 Difference]: Finished difference Result 1034 states and 1463 transitions. [2020-10-14 05:44:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:44:19,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 05:44:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:19,271 INFO L225 Difference]: With dead ends: 1034 [2020-10-14 05:44:19,271 INFO L226 Difference]: Without dead ends: 1004 [2020-10-14 05:44:19,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:44:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-14 05:44:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 885. [2020-10-14 05:44:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-14 05:44:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1205 transitions. [2020-10-14 05:44:19,354 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1205 transitions. Word has length 60 [2020-10-14 05:44:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:19,354 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1205 transitions. [2020-10-14 05:44:19,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:44:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1205 transitions. [2020-10-14 05:44:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:44:19,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:19,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:44:19,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:44:19,357 INFO L427 AbstractCegarLoop]: === Iteration 43 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:19,357 INFO L82 PathProgramCache]: Analyzing trace with hash 635065867, now seen corresponding path program 1 times [2020-10-14 05:44:19,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:19,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958129095] [2020-10-14 05:44:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:44:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:20,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:20,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 05:44:20,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:44:20,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:44:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:44:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:44:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:44:20,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:44:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:44:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:44:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:44:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:44:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:44:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:44:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:20,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:20,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958129095] [2020-10-14 05:44:20,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:20,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:44:20,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034793659] [2020-10-14 05:44:20,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:44:20,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:20,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:44:20,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:44:20,364 INFO L87 Difference]: Start difference. First operand 885 states and 1205 transitions. Second operand 12 states. [2020-10-14 05:44:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:23,698 INFO L93 Difference]: Finished difference Result 1034 states and 1459 transitions. [2020-10-14 05:44:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:44:23,699 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-14 05:44:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:23,703 INFO L225 Difference]: With dead ends: 1034 [2020-10-14 05:44:23,703 INFO L226 Difference]: Without dead ends: 1008 [2020-10-14 05:44:23,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:44:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-14 05:44:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 885. [2020-10-14 05:44:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-14 05:44:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1205 transitions. [2020-10-14 05:44:23,826 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1205 transitions. Word has length 64 [2020-10-14 05:44:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:23,827 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1205 transitions. [2020-10-14 05:44:23,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:44:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1205 transitions. [2020-10-14 05:44:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:44:23,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:23,830 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] [2020-10-14 05:44:23,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 05:44:23,830 INFO L427 AbstractCegarLoop]: === Iteration 44 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash -640820552, now seen corresponding path program 1 times [2020-10-14 05:44:23,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:23,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094949531] [2020-10-14 05:44:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:24,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:24,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:44:24,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:44:24,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:44:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:44:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:44:24,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 05:44:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:44:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 05:44:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:44:24,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:44:24,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:44:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:44:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:24,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:24,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094949531] [2020-10-14 05:44:24,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:24,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:44:24,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054246677] [2020-10-14 05:44:24,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:44:24,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:24,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:44:24,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:44:24,908 INFO L87 Difference]: Start difference. First operand 885 states and 1205 transitions. Second operand 12 states. [2020-10-14 05:44:28,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:28,234 INFO L93 Difference]: Finished difference Result 1032 states and 1455 transitions. [2020-10-14 05:44:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:44:28,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-14 05:44:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:28,237 INFO L225 Difference]: With dead ends: 1032 [2020-10-14 05:44:28,237 INFO L226 Difference]: Without dead ends: 1006 [2020-10-14 05:44:28,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:44:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-14 05:44:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 885. [2020-10-14 05:44:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-14 05:44:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1204 transitions. [2020-10-14 05:44:28,311 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1204 transitions. Word has length 63 [2020-10-14 05:44:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:28,311 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1204 transitions. [2020-10-14 05:44:28,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:44:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1204 transitions. [2020-10-14 05:44:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:44:28,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:28,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:44:28,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 05:44:28,313 INFO L427 AbstractCegarLoop]: === Iteration 45 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1034483375, now seen corresponding path program 1 times [2020-10-14 05:44:28,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:28,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157691028] [2020-10-14 05:44:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:28,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:28,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:44:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:28,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:28,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:28,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:28,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:28,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:28,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:28,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:28,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:28,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:28,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:28,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:28,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:44:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 05:44:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:28,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:44:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:44:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:44:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:29,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:44:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 05:44:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:29,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:29,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:44:29,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:29,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:44:29,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:29,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:44:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:44:29,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:29,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:29,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:29,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157691028] [2020-10-14 05:44:29,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:29,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 05:44:29,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101382704] [2020-10-14 05:44:29,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:44:29,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:44:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:44:29,291 INFO L87 Difference]: Start difference. First operand 885 states and 1204 transitions. Second operand 19 states. [2020-10-14 05:44:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:33,749 INFO L93 Difference]: Finished difference Result 1028 states and 1452 transitions. [2020-10-14 05:44:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:44:33,750 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 05:44:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:33,753 INFO L225 Difference]: With dead ends: 1028 [2020-10-14 05:44:33,753 INFO L226 Difference]: Without dead ends: 1004 [2020-10-14 05:44:33,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:44:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-14 05:44:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 885. [2020-10-14 05:44:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-14 05:44:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1202 transitions. [2020-10-14 05:44:33,829 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1202 transitions. Word has length 62 [2020-10-14 05:44:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:33,829 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1202 transitions. [2020-10-14 05:44:33,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:44:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1202 transitions. [2020-10-14 05:44:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:44:33,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:33,831 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] [2020-10-14 05:44:33,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 05:44:33,831 INFO L427 AbstractCegarLoop]: === Iteration 46 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:33,832 INFO L82 PathProgramCache]: Analyzing trace with hash -195834208, now seen corresponding path program 1 times [2020-10-14 05:44:33,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:33,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627677771] [2020-10-14 05:44:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:44:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:44:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:44:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:34,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:44:34,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 05:44:34,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:44:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:44:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:44:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:44:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 05:44:34,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:44:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:44:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 05:44:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:44:34,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:44:34,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:44:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:44:34,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:44:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:34,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:34,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:34,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:34,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:44:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:44:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:34,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627677771] [2020-10-14 05:44:34,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:34,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 05:44:34,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344509937] [2020-10-14 05:44:34,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:44:34,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:34,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:44:34,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:44:34,769 INFO L87 Difference]: Start difference. First operand 885 states and 1202 transitions. Second operand 19 states. [2020-10-14 05:44:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:39,175 INFO L93 Difference]: Finished difference Result 1028 states and 1449 transitions. [2020-10-14 05:44:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:44:39,176 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 05:44:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:39,179 INFO L225 Difference]: With dead ends: 1028 [2020-10-14 05:44:39,179 INFO L226 Difference]: Without dead ends: 1004 [2020-10-14 05:44:39,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:44:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-14 05:44:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 883. [2020-10-14 05:44:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-14 05:44:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1198 transitions. [2020-10-14 05:44:39,255 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1198 transitions. Word has length 62 [2020-10-14 05:44:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:39,255 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1198 transitions. [2020-10-14 05:44:39,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:44:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1198 transitions. [2020-10-14 05:44:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:44:39,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:39,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:44:39,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 05:44:39,257 INFO L427 AbstractCegarLoop]: === Iteration 47 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:39,258 INFO L82 PathProgramCache]: Analyzing trace with hash 228864083, now seen corresponding path program 1 times [2020-10-14 05:44:39,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:39,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244957876] [2020-10-14 05:44:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:44:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:39,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:44:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:44:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:44:39,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:44:39,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:44:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:44:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:44:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:44:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:39,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:44:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:44:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:40,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:40,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:44:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:40,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:44:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:40,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244957876] [2020-10-14 05:44:40,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:40,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:44:40,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256126027] [2020-10-14 05:44:40,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:44:40,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:40,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:44:40,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:44:40,018 INFO L87 Difference]: Start difference. First operand 883 states and 1198 transitions. Second operand 12 states. [2020-10-14 05:44:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:44:42,643 INFO L93 Difference]: Finished difference Result 1055 states and 1488 transitions. [2020-10-14 05:44:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:44:42,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-14 05:44:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:44:42,648 INFO L225 Difference]: With dead ends: 1055 [2020-10-14 05:44:42,648 INFO L226 Difference]: Without dead ends: 1021 [2020-10-14 05:44:42,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:44:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-14 05:44:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 887. [2020-10-14 05:44:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-14 05:44:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1206 transitions. [2020-10-14 05:44:42,747 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1206 transitions. Word has length 62 [2020-10-14 05:44:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:44:42,747 INFO L479 AbstractCegarLoop]: Abstraction has 887 states and 1206 transitions. [2020-10-14 05:44:42,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:44:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1206 transitions. [2020-10-14 05:44:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:44:42,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:44:42,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:44:42,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 05:44:42,749 INFO L427 AbstractCegarLoop]: === Iteration 48 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:44:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:44:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2111220271, now seen corresponding path program 1 times [2020-10-14 05:44:42,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:44:42,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451107106] [2020-10-14 05:44:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:44:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:44:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:44:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 05:44:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:44:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:44:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:44:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:44:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:44:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:44:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:44:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:44:43,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:44:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:44:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-14 05:44:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:44:43,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:44:43,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:44:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:44:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:44:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:44:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:44:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:44:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:44:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:44:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:44:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:44:43,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:44:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:44:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:44:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:44:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:44:43,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:44:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:44:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:44:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:44:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:44:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:44:43,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451107106] [2020-10-14 05:44:43,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:44:43,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 05:44:43,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752528229] [2020-10-14 05:44:43,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:44:43,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:44:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:44:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:44:43,353 INFO L87 Difference]: Start difference. First operand 887 states and 1206 transitions. Second operand 10 states.