/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 10:05:01,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 10:05:01,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 10:05:01,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 10:05:01,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 10:05:01,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 10:05:01,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 10:05:01,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 10:05:01,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 10:05:01,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 10:05:01,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 10:05:01,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 10:05:01,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 10:05:01,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 10:05:01,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 10:05:01,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 10:05:01,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 10:05:01,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 10:05:01,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 10:05:01,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 10:05:01,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 10:05:01,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 10:05:01,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 10:05:01,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 10:05:01,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 10:05:01,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 10:05:01,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 10:05:01,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 10:05:01,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 10:05:01,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 10:05:01,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 10:05:01,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 10:05:01,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 10:05:01,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 10:05:01,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 10:05:01,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 10:05:01,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 10:05:01,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 10:05:01,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 10:05:01,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 10:05:01,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 10:05:01,389 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 [2020-10-29 10:05:01,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 10:05:01,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 10:05:01,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 10:05:01,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 10:05:01,423 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 10:05:01,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 10:05:01,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 10:05:01,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 10:05:01,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 10:05:01,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 10:05:01,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 10:05:01,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 10:05:01,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 10:05:01,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 10:05:01,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 10:05:01,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 10:05:01,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 10:05:01,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 10:05:01,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 10:05:01,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 10:05:01,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 10:05:01,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 10:05:01,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 10:05:01,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 10:05:01,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 10:05:01,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 10:05:01,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 10:05:01,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 10:05:01,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 10:05:01,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 10:05:01,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 10:05:01,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 10:05:01,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 10:05:01,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 10:05:01,895 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 10:05:01,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2020-10-29 10:05:01,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff14fd27b/22c278336a084dfe80cf19ed86e86d9a/FLAGc1f078c9c [2020-10-29 10:05:02,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 10:05:02,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2020-10-29 10:05:02,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff14fd27b/22c278336a084dfe80cf19ed86e86d9a/FLAGc1f078c9c [2020-10-29 10:05:02,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff14fd27b/22c278336a084dfe80cf19ed86e86d9a [2020-10-29 10:05:02,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 10:05:03,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 10:05:03,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 10:05:03,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 10:05:03,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 10:05:03,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:05:02" (1/1) ... [2020-10-29 10:05:03,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1361c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03, skipping insertion in model container [2020-10-29 10:05:03,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:05:02" (1/1) ... [2020-10-29 10:05:03,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 10:05:03,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 10:05:03,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:05:03,610 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 10:05:03,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:05:03,806 INFO L208 MainTranslator]: Completed translation [2020-10-29 10:05:03,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03 WrapperNode [2020-10-29 10:05:03,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 10:05:03,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 10:05:03,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 10:05:03,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 10:05:03,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (1/1) ... [2020-10-29 10:05:03,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 10:05:03,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 10:05:03,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 10:05:03,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 10:05:03,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (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 [2020-10-29 10:05:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 10:05:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 10:05:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 10:05:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-29 10:05:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-29 10:05:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-29 10:05:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-29 10:05:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-29 10:05:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-29 10:05:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-29 10:05:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-29 10:05:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-29 10:05:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-29 10:05:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-29 10:05:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-29 10:05:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-29 10:05:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-29 10:05:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-29 10:05:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-29 10:05:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-29 10:05:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-29 10:05:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-29 10:05:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-29 10:05:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 10:05:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-29 10:05:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-29 10:05:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-29 10:05:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-29 10:05:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-29 10:05:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-29 10:05:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-29 10:05:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 10:05:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 10:05:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 10:05:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 10:05:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 10:05:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 10:05:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-29 10:05:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-29 10:05:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-29 10:05:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-29 10:05:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-29 10:05:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-29 10:05:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-29 10:05:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-29 10:05:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-29 10:05:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-29 10:05:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-29 10:05:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-29 10:05:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-29 10:05:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-29 10:05:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-29 10:05:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-29 10:05:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-29 10:05:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-29 10:05:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-29 10:05:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-29 10:05:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-29 10:05:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 10:05:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-29 10:05:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 10:05:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 10:05:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 10:05:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 10:05:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 10:05:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 10:05:04,671 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:04,752 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-29 10:05:04,752 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-29 10:05:04,762 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:04,800 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-29 10:05:04,801 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-29 10:05:04,824 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:04,841 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-29 10:05:04,841 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-29 10:05:04,911 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:04,954 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-29 10:05:04,954 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2020-10-29 10:05:04,954 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-29 10:05:04,959 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:05,117 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-29 10:05:05,117 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-29 10:05:05,118 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:05,156 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-29 10:05:05,156 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-29 10:05:05,200 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:05,222 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-29 10:05:05,222 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-29 10:05:05,227 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:05,465 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-29 10:05:05,465 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-29 10:05:05,482 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:05:05,489 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:05:05,489 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:05:05,523 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 10:05:05,523 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 10:05:05,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:05:05 BoogieIcfgContainer [2020-10-29 10:05:05,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 10:05:05,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 10:05:05,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 10:05:05,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 10:05:05,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 10:05:02" (1/3) ... [2020-10-29 10:05:05,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212c646a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:05:05, skipping insertion in model container [2020-10-29 10:05:05,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:03" (2/3) ... [2020-10-29 10:05:05,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212c646a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:05:05, skipping insertion in model container [2020-10-29 10:05:05,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:05:05" (3/3) ... [2020-10-29 10:05:05,535 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.c [2020-10-29 10:05:05,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 10:05:05,553 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 10:05:05,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 10:05:05,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 10:05:05,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 10:05:05,602 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 10:05:05,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 10:05:05,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 10:05:05,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 10:05:05,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 10:05:05,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 10:05:05,634 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-10-29 10:05:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 10:05:05,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:05,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:05:05,642 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:05,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1906802253, now seen corresponding path program 1 times [2020-10-29 10:05:05,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:05,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392319107] [2020-10-29 10:05:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:06,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:06,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 10:05:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-29 10:05:06,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:06,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:05:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:05:06,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 10:05:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:06,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:06,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:06,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 10:05:06,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:06,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:06,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:06,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:06,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 10:05:06,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:06,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:06,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392319107] [2020-10-29 10:05:06,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:06,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 10:05:06,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846301309] [2020-10-29 10:05:06,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 10:05:06,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:06,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 10:05:06,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 10:05:06,635 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 5 states. [2020-10-29 10:05:06,806 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 10:05:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:10,982 INFO L93 Difference]: Finished difference Result 1048 states and 1681 transitions. [2020-10-29 10:05:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:05:10,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-29 10:05:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:11,023 INFO L225 Difference]: With dead ends: 1048 [2020-10-29 10:05:11,024 INFO L226 Difference]: Without dead ends: 664 [2020-10-29 10:05:11,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:05:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-29 10:05:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 508. [2020-10-29 10:05:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-29 10:05:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 738 transitions. [2020-10-29 10:05:11,250 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 738 transitions. Word has length 21 [2020-10-29 10:05:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:11,250 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 738 transitions. [2020-10-29 10:05:11,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 10:05:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 738 transitions. [2020-10-29 10:05:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 10:05:11,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:11,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:05:11,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 10:05:11,254 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2058850355, now seen corresponding path program 1 times [2020-10-29 10:05:11,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:11,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361176890] [2020-10-29 10:05:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:11,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:11,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 10:05:11,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:11,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 10:05:11,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:11,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:05:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:05:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:05:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:11,711 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:05:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:11,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 10:05:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:11,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:11,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:11,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:11,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:05:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:11,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:11,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:11,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:11,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:11,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:05:11,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:11,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 10:05:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:11,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361176890] [2020-10-29 10:05:11,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:11,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:05:11,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106897132] [2020-10-29 10:05:11,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:05:11,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:05:11,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:05:11,901 INFO L87 Difference]: Start difference. First operand 508 states and 738 transitions. Second operand 6 states. [2020-10-29 10:05:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:16,987 INFO L93 Difference]: Finished difference Result 964 states and 1423 transitions. [2020-10-29 10:05:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:05:16,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-29 10:05:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:17,002 INFO L225 Difference]: With dead ends: 964 [2020-10-29 10:05:17,003 INFO L226 Difference]: Without dead ends: 844 [2020-10-29 10:05:17,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:05:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-29 10:05:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 663. [2020-10-29 10:05:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-29 10:05:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 962 transitions. [2020-10-29 10:05:17,138 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 962 transitions. Word has length 26 [2020-10-29 10:05:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:17,139 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 962 transitions. [2020-10-29 10:05:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:05:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 962 transitions. [2020-10-29 10:05:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 10:05:17,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:17,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:05:17,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 10:05:17,151 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1314336893, now seen corresponding path program 1 times [2020-10-29 10:05:17,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:17,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409697338] [2020-10-29 10:05:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 10:05:17,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-29 10:05:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:17,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:05:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:05:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 10:05:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:17,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:17,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:17,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:05:17,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:17,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:17,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:17,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:05:17,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:17,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:18,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:18,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:05:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:18,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:18,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409697338] [2020-10-29 10:05:18,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:18,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:05:18,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668226936] [2020-10-29 10:05:18,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:05:18,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:05:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:05:18,048 INFO L87 Difference]: Start difference. First operand 663 states and 962 transitions. Second operand 6 states. [2020-10-29 10:05:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:22,092 INFO L93 Difference]: Finished difference Result 1145 states and 1644 transitions. [2020-10-29 10:05:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:05:22,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 10:05:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:22,101 INFO L225 Difference]: With dead ends: 1145 [2020-10-29 10:05:22,102 INFO L226 Difference]: Without dead ends: 968 [2020-10-29 10:05:22,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:05:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-29 10:05:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 788. [2020-10-29 10:05:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-29 10:05:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1133 transitions. [2020-10-29 10:05:22,205 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1133 transitions. Word has length 31 [2020-10-29 10:05:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:22,206 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1133 transitions. [2020-10-29 10:05:22,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:05:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1133 transitions. [2020-10-29 10:05:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 10:05:22,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:22,208 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] [2020-10-29 10:05:22,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 10:05:22,208 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:22,209 INFO L82 PathProgramCache]: Analyzing trace with hash -366706017, now seen corresponding path program 1 times [2020-10-29 10:05:22,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:22,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029834064] [2020-10-29 10:05:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:22,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:22,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 10:05:22,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:05:22,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-29 10:05:22,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:22,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:05:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:05:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 10:05:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:22,888 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:05:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:22,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:05:22,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:22,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:22,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:22,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:22,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:05:22,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:22,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:22,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:22,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:23,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:23,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:23,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:23,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:05:23,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:23,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:05:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:05:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:23,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029834064] [2020-10-29 10:05:23,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:23,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:05:23,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395420826] [2020-10-29 10:05:23,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:05:23,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:23,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:05:23,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:05:23,034 INFO L87 Difference]: Start difference. First operand 788 states and 1133 transitions. Second operand 8 states. [2020-10-29 10:05:23,501 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-29 10:05:23,740 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 10:05:25,433 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 10:05:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:28,773 INFO L93 Difference]: Finished difference Result 1620 states and 2404 transitions. [2020-10-29 10:05:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:05:28,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-29 10:05:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:28,785 INFO L225 Difference]: With dead ends: 1620 [2020-10-29 10:05:28,786 INFO L226 Difference]: Without dead ends: 1055 [2020-10-29 10:05:28,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:05:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-29 10:05:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 834. [2020-10-29 10:05:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-29 10:05:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1201 transitions. [2020-10-29 10:05:28,904 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1201 transitions. Word has length 32 [2020-10-29 10:05:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:28,905 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1201 transitions. [2020-10-29 10:05:28,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:05:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1201 transitions. [2020-10-29 10:05:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 10:05:28,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:28,907 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] [2020-10-29 10:05:28,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 10:05:28,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:28,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1307254387, now seen corresponding path program 1 times [2020-10-29 10:05:28,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:28,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053744277] [2020-10-29 10:05:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:29,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:29,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:05:29,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 10:05:29,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:29,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:05:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:05:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:05:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:29,254 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:05:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:29,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 10:05:29,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:29,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:29,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:29,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:29,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:05:29,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:29,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:29,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:29,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:29,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:29,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:29,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:05:29,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:29,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:29,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053744277] [2020-10-29 10:05:29,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:29,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:05:29,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596325396] [2020-10-29 10:05:29,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:05:29,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:29,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:05:29,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:05:29,377 INFO L87 Difference]: Start difference. First operand 834 states and 1201 transitions. Second operand 6 states. [2020-10-29 10:05:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:33,165 INFO L93 Difference]: Finished difference Result 965 states and 1424 transitions. [2020-10-29 10:05:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:05:33,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-29 10:05:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:33,172 INFO L225 Difference]: With dead ends: 965 [2020-10-29 10:05:33,173 INFO L226 Difference]: Without dead ends: 960 [2020-10-29 10:05:33,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 10:05:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-29 10:05:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 833. [2020-10-29 10:05:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-29 10:05:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1198 transitions. [2020-10-29 10:05:33,259 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1198 transitions. Word has length 37 [2020-10-29 10:05:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:33,260 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 1198 transitions. [2020-10-29 10:05:33,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:05:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1198 transitions. [2020-10-29 10:05:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 10:05:33,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:33,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:05:33,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 10:05:33,262 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:33,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:33,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1665857035, now seen corresponding path program 1 times [2020-10-29 10:05:33,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:33,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065367415] [2020-10-29 10:05:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:34,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:34,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 10:05:34,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:05:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-29 10:05:34,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:34,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:34,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:05:34,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:05:34,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:05:34,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:34,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:05:34,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:34,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:34,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:34,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:34,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:05:34,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:34,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:05:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:34,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065367415] [2020-10-29 10:05:34,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:34,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:05:34,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412176827] [2020-10-29 10:05:34,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:05:34,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:05:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:05:34,631 INFO L87 Difference]: Start difference. First operand 833 states and 1198 transitions. Second operand 6 states. [2020-10-29 10:05:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:38,363 INFO L93 Difference]: Finished difference Result 1230 states and 1785 transitions. [2020-10-29 10:05:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:05:38,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-29 10:05:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:38,373 INFO L225 Difference]: With dead ends: 1230 [2020-10-29 10:05:38,373 INFO L226 Difference]: Without dead ends: 1211 [2020-10-29 10:05:38,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:05:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2020-10-29 10:05:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1028. [2020-10-29 10:05:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2020-10-29 10:05:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1471 transitions. [2020-10-29 10:05:38,482 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1471 transitions. Word has length 40 [2020-10-29 10:05:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:38,482 INFO L481 AbstractCegarLoop]: Abstraction has 1028 states and 1471 transitions. [2020-10-29 10:05:38,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:05:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1471 transitions. [2020-10-29 10:05:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:05:38,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:38,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:05:38,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 10:05:38,487 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:38,487 INFO L82 PathProgramCache]: Analyzing trace with hash -38622429, now seen corresponding path program 1 times [2020-10-29 10:05:38,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:38,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072260510] [2020-10-29 10:05:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:38,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:05:38,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:05:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 10:05:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:38,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 10:05:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:05:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:38,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:38,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:38,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:05:38,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:38,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:05:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:39,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:39,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:39,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:05:39,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:39,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 10:05:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:05:39,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:39,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:39,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072260510] [2020-10-29 10:05:39,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:39,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 10:05:39,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641083376] [2020-10-29 10:05:39,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 10:05:39,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 10:05:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 10:05:39,089 INFO L87 Difference]: Start difference. First operand 1028 states and 1471 transitions. Second operand 7 states. [2020-10-29 10:05:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:42,337 INFO L93 Difference]: Finished difference Result 1542 states and 2226 transitions. [2020-10-29 10:05:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 10:05:42,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-29 10:05:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:42,346 INFO L225 Difference]: With dead ends: 1542 [2020-10-29 10:05:42,347 INFO L226 Difference]: Without dead ends: 1146 [2020-10-29 10:05:42,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:05:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2020-10-29 10:05:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1025. [2020-10-29 10:05:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-10-29 10:05:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1464 transitions. [2020-10-29 10:05:42,454 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1464 transitions. Word has length 48 [2020-10-29 10:05:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:42,454 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1464 transitions. [2020-10-29 10:05:42,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 10:05:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1464 transitions. [2020-10-29 10:05:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:05:42,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:42,459 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] [2020-10-29 10:05:42,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 10:05:42,459 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:42,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 784413609, now seen corresponding path program 1 times [2020-10-29 10:05:42,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:42,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503763598] [2020-10-29 10:05:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:42,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:43,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:43,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 10:05:43,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 10:05:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:43,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:43,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:05:43,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:43,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:43,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:05:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:43,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:05:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:43,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:05:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 10:05:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 10:05:43,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:05:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:43,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:05:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:05:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:43,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503763598] [2020-10-29 10:05:43,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:43,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:05:43,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343173356] [2020-10-29 10:05:43,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:05:43,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:43,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:05:43,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:05:43,737 INFO L87 Difference]: Start difference. First operand 1025 states and 1464 transitions. Second operand 9 states. [2020-10-29 10:05:44,057 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:05:44,632 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:05:46,493 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-29 10:05:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:52,371 INFO L93 Difference]: Finished difference Result 2305 states and 3370 transitions. [2020-10-29 10:05:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:05:52,372 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-29 10:05:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:52,384 INFO L225 Difference]: With dead ends: 2305 [2020-10-29 10:05:52,385 INFO L226 Difference]: Without dead ends: 1845 [2020-10-29 10:05:52,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:05:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-10-29 10:05:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1076. [2020-10-29 10:05:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-29 10:05:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1532 transitions. [2020-10-29 10:05:52,519 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1532 transitions. Word has length 48 [2020-10-29 10:05:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:52,519 INFO L481 AbstractCegarLoop]: Abstraction has 1076 states and 1532 transitions. [2020-10-29 10:05:52,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:05:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1532 transitions. [2020-10-29 10:05:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 10:05:52,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:52,523 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] [2020-10-29 10:05:52,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 10:05:52,524 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:52,524 INFO L82 PathProgramCache]: Analyzing trace with hash 886924911, now seen corresponding path program 1 times [2020-10-29 10:05:52,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:52,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724602788] [2020-10-29 10:05:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:52,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:52,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 10:05:52,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:05:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-29 10:05:52,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:52,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:05:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:05:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 10:05:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:52,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:52,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:52,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:52,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:05:52,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:52,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:05:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:05:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:53,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:05:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:53,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:53,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:05:53,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:53,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:05:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:05:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:53,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:53,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:05:53,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 10:05:53,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:53,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:05:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 10:05:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 10:05:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:05:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:05:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:05:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:05:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:05:53,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724602788] [2020-10-29 10:05:53,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:05:53,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:05:53,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299079577] [2020-10-29 10:05:53,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:05:53,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:05:53,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:05:53,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:05:53,288 INFO L87 Difference]: Start difference. First operand 1076 states and 1532 transitions. Second operand 12 states. [2020-10-29 10:05:53,444 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 10:05:53,600 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 10:05:54,115 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-29 10:05:54,403 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:05:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:05:58,410 INFO L93 Difference]: Finished difference Result 1498 states and 2149 transitions. [2020-10-29 10:05:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:05:58,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-29 10:05:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:05:58,418 INFO L225 Difference]: With dead ends: 1498 [2020-10-29 10:05:58,418 INFO L226 Difference]: Without dead ends: 1436 [2020-10-29 10:05:58,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-29 10:05:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2020-10-29 10:05:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1155. [2020-10-29 10:05:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-10-29 10:05:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1647 transitions. [2020-10-29 10:05:58,549 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1647 transitions. Word has length 49 [2020-10-29 10:05:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:05:58,549 INFO L481 AbstractCegarLoop]: Abstraction has 1155 states and 1647 transitions. [2020-10-29 10:05:58,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:05:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1647 transitions. [2020-10-29 10:05:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:05:58,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:05:58,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:05:58,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 10:05:58,554 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:05:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:05:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2111842919, now seen corresponding path program 1 times [2020-10-29 10:05:58,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:05:58,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129158837] [2020-10-29 10:05:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:05:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:59,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:59,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 10:05:59,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:05:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-29 10:05:59,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:59,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:05:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 10:05:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:05:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:59,811 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:05:59,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:05:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:59,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:59,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:05:59,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:59,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:59,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:05:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:59,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:59,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:59,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:59,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:05:59,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:59,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:05:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:59,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:05:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:05:59,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:05:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:05:59,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:05:59,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:05:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:05:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:05:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:05:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:05:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 10:05:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:05:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:05:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 10:06:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:06:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 10:06:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:00,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 10:06:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:06:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:06:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:00,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:00,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 10:06:00,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 10:06:00,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:00,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 10:06:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:06:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:06:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:00,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 10:06:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:06:00,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:00,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 10:06:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:06:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:00,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129158837] [2020-10-29 10:06:00,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:00,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:06:00,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66660256] [2020-10-29 10:06:00,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:06:00,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:06:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:06:00,285 INFO L87 Difference]: Start difference. First operand 1155 states and 1647 transitions. Second operand 9 states. [2020-10-29 10:06:00,430 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 10:06:01,132 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 10:06:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:04,036 INFO L93 Difference]: Finished difference Result 1392 states and 1980 transitions. [2020-10-29 10:06:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:06:04,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-29 10:06:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:04,044 INFO L225 Difference]: With dead ends: 1392 [2020-10-29 10:06:04,044 INFO L226 Difference]: Without dead ends: 1207 [2020-10-29 10:06:04,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:06:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-10-29 10:06:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1035. [2020-10-29 10:06:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-29 10:06:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1458 transitions. [2020-10-29 10:06:04,193 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1458 transitions. Word has length 53 [2020-10-29 10:06:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:04,193 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1458 transitions. [2020-10-29 10:06:04,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:06:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1458 transitions. [2020-10-29 10:06:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 10:06:04,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:04,198 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] [2020-10-29 10:06:04,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 10:06:04,199 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash -45024812, now seen corresponding path program 1 times [2020-10-29 10:06:04,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:04,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511602968] [2020-10-29 10:06:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:04,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:04,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 10:06:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 10:06:04,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:04,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 10:06:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:06:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:04,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:04,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:06:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:04,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:04,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:06:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:04,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:06:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 10:06:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:04,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 10:06:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:04,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:04,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:06:04,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:06:04,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:04,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:06:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:04,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511602968] [2020-10-29 10:06:04,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:04,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 10:06:04,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938285916] [2020-10-29 10:06:04,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 10:06:04,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:04,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 10:06:04,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 10:06:04,611 INFO L87 Difference]: Start difference. First operand 1035 states and 1458 transitions. Second operand 7 states. [2020-10-29 10:06:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:08,873 INFO L93 Difference]: Finished difference Result 1246 states and 1782 transitions. [2020-10-29 10:06:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 10:06:08,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-29 10:06:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:08,881 INFO L225 Difference]: With dead ends: 1246 [2020-10-29 10:06:08,881 INFO L226 Difference]: Without dead ends: 1234 [2020-10-29 10:06:08,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:06:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2020-10-29 10:06:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1085. [2020-10-29 10:06:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-10-29 10:06:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1516 transitions. [2020-10-29 10:06:09,012 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1516 transitions. Word has length 51 [2020-10-29 10:06:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:09,012 INFO L481 AbstractCegarLoop]: Abstraction has 1085 states and 1516 transitions. [2020-10-29 10:06:09,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 10:06:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1516 transitions. [2020-10-29 10:06:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 10:06:09,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:09,016 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] [2020-10-29 10:06:09,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 10:06:09,017 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:09,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1391409364, now seen corresponding path program 1 times [2020-10-29 10:06:09,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:09,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030466401] [2020-10-29 10:06:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:09,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 10:06:09,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:09,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-29 10:06:09,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:09,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:09,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:06:09,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:06:09,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 10:06:09,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:09,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:09,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:06:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:09,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:09,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:06:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:09,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:09,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:09,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:09,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:09,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:09,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:09,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:06:09,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:06:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:06:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 10:06:09,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:09,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:06:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 10:06:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:06:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:09,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:06:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 10:06:09,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:09,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:06:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:06:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:06:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:10,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030466401] [2020-10-29 10:06:10,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:10,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:06:10,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363736054] [2020-10-29 10:06:10,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:06:10,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:10,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:06:10,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:06:10,030 INFO L87 Difference]: Start difference. First operand 1085 states and 1516 transitions. Second operand 12 states. [2020-10-29 10:06:10,297 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-29 10:06:10,458 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:06:10,827 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 10:06:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:15,670 INFO L93 Difference]: Finished difference Result 1266 states and 1803 transitions. [2020-10-29 10:06:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:06:15,671 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-29 10:06:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:15,678 INFO L225 Difference]: With dead ends: 1266 [2020-10-29 10:06:15,679 INFO L226 Difference]: Without dead ends: 1202 [2020-10-29 10:06:15,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 10:06:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-10-29 10:06:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1062. [2020-10-29 10:06:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-10-29 10:06:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1482 transitions. [2020-10-29 10:06:15,815 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1482 transitions. Word has length 51 [2020-10-29 10:06:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:15,816 INFO L481 AbstractCegarLoop]: Abstraction has 1062 states and 1482 transitions. [2020-10-29 10:06:15,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:06:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1482 transitions. [2020-10-29 10:06:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:06:15,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:15,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:06:15,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 10:06:15,820 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash -459808091, now seen corresponding path program 1 times [2020-10-29 10:06:15,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:15,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793152894] [2020-10-29 10:06:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 10:06:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-29 10:06:16,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 10:06:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:06:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,352 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:06:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:16,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:06:16,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:16,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:06:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 10:06:16,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 10:06:16,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 10:06:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 10:06:16,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:16,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 10:06:16,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:06:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:16,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:16,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:06:16,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:16,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:16,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:16,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:06:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:16,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793152894] [2020-10-29 10:06:16,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:16,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:06:16,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433983014] [2020-10-29 10:06:16,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:06:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:06:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:06:16,798 INFO L87 Difference]: Start difference. First operand 1062 states and 1482 transitions. Second operand 9 states. [2020-10-29 10:06:16,937 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 10:06:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:21,839 INFO L93 Difference]: Finished difference Result 1238 states and 1764 transitions. [2020-10-29 10:06:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:06:21,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-29 10:06:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:21,848 INFO L225 Difference]: With dead ends: 1238 [2020-10-29 10:06:21,848 INFO L226 Difference]: Without dead ends: 1232 [2020-10-29 10:06:21,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:06:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2020-10-29 10:06:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1089. [2020-10-29 10:06:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-10-29 10:06:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1515 transitions. [2020-10-29 10:06:21,991 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1515 transitions. Word has length 53 [2020-10-29 10:06:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:21,991 INFO L481 AbstractCegarLoop]: Abstraction has 1089 states and 1515 transitions. [2020-10-29 10:06:21,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:06:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1515 transitions. [2020-10-29 10:06:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 10:06:21,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:21,996 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] [2020-10-29 10:06:21,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 10:06:21,996 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:21,996 INFO L82 PathProgramCache]: Analyzing trace with hash -521494691, now seen corresponding path program 1 times [2020-10-29 10:06:21,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:21,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354633615] [2020-10-29 10:06:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:06:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 10:06:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:06:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 10:06:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:06:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:22,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:22,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:22,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:06:22,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:22,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:22,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:06:22,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:22,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:22,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:22,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:06:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:22,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:06:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:22,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:22,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:06:22,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 10:06:22,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:22,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:06:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 10:06:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:22,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:22,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:06:22,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:06:22,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:22,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:06:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:06:22,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:22,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354633615] [2020-10-29 10:06:22,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:22,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:06:22,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931967909] [2020-10-29 10:06:22,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:06:22,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:22,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:06:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:06:22,694 INFO L87 Difference]: Start difference. First operand 1089 states and 1515 transitions. Second operand 12 states. [2020-10-29 10:06:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:28,712 INFO L93 Difference]: Finished difference Result 1245 states and 1773 transitions. [2020-10-29 10:06:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:06:28,712 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-29 10:06:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:28,718 INFO L225 Difference]: With dead ends: 1245 [2020-10-29 10:06:28,718 INFO L226 Difference]: Without dead ends: 1240 [2020-10-29 10:06:28,719 INFO L677 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 [2020-10-29 10:06:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-29 10:06:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1096. [2020-10-29 10:06:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-10-29 10:06:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1524 transitions. [2020-10-29 10:06:28,853 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1524 transitions. Word has length 52 [2020-10-29 10:06:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:28,854 INFO L481 AbstractCegarLoop]: Abstraction has 1096 states and 1524 transitions. [2020-10-29 10:06:28,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:06:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1524 transitions. [2020-10-29 10:06:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 10:06:28,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:28,857 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] [2020-10-29 10:06:28,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 10:06:28,858 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash -530076421, now seen corresponding path program 1 times [2020-10-29 10:06:28,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:28,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574237441] [2020-10-29 10:06:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:29,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:29,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:06:29,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:06:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-29 10:06:29,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:29,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:06:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:06:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 10:06:29,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:29,809 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:06:29,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:06:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:29,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:29,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:29,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:06:29,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:29,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:06:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:29,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:06:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:30,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:30,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:06:30,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 10:06:30,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:30,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:06:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 10:06:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:30,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:30,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:06:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 10:06:30,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:30,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:06:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:30,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574237441] [2020-10-29 10:06:30,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:30,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:06:30,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522943868] [2020-10-29 10:06:30,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:06:30,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:30,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:06:30,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:06:30,082 INFO L87 Difference]: Start difference. First operand 1096 states and 1524 transitions. Second operand 9 states. [2020-10-29 10:06:30,370 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:06:32,707 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-29 10:06:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:35,985 INFO L93 Difference]: Finished difference Result 1250 states and 1777 transitions. [2020-10-29 10:06:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:06:35,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-29 10:06:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:35,997 INFO L225 Difference]: With dead ends: 1250 [2020-10-29 10:06:35,997 INFO L226 Difference]: Without dead ends: 1212 [2020-10-29 10:06:36,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:06:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-29 10:06:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1067. [2020-10-29 10:06:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2020-10-29 10:06:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1489 transitions. [2020-10-29 10:06:36,144 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1489 transitions. Word has length 52 [2020-10-29 10:06:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:36,145 INFO L481 AbstractCegarLoop]: Abstraction has 1067 states and 1489 transitions. [2020-10-29 10:06:36,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:06:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1489 transitions. [2020-10-29 10:06:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 10:06:36,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:36,149 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] [2020-10-29 10:06:36,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 10:06:36,149 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:36,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:36,149 INFO L82 PathProgramCache]: Analyzing trace with hash -840703104, now seen corresponding path program 1 times [2020-10-29 10:06:36,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:36,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524544877] [2020-10-29 10:06:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:36,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:39,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 10:06:39,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 10:06:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3432 [2020-10-29 10:06:39,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:39,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:06:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:06:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 10:06:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:39,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:39,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:39,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:39,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:39,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:39,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:06:39,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:39,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:39,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:39,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:39,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:39,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:39,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:39,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:39,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:39,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:39,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:39,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:06:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:06:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:40,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:40,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 10:06:40,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:40,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 10:06:40,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:40,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 10:06:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:40,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:40,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 10:06:40,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:40,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 10:06:40,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:40,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:40,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:06:40,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 10:06:40,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:06:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:40,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:40,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:06:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:06:40,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:40,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 10:06:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:40,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524544877] [2020-10-29 10:06:40,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:40,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:06:40,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383422771] [2020-10-29 10:06:40,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:06:40,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:40,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:06:40,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:06:40,208 INFO L87 Difference]: Start difference. First operand 1067 states and 1489 transitions. Second operand 12 states. [2020-10-29 10:06:40,405 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:06:40,828 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 10:06:41,070 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:06:43,478 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 10:06:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:47,560 INFO L93 Difference]: Finished difference Result 1355 states and 1910 transitions. [2020-10-29 10:06:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:06:47,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-29 10:06:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:47,568 INFO L225 Difference]: With dead ends: 1355 [2020-10-29 10:06:47,568 INFO L226 Difference]: Without dead ends: 1320 [2020-10-29 10:06:47,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-29 10:06:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2020-10-29 10:06:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1104. [2020-10-29 10:06:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2020-10-29 10:06:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1530 transitions. [2020-10-29 10:06:47,722 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1530 transitions. Word has length 55 [2020-10-29 10:06:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:47,723 INFO L481 AbstractCegarLoop]: Abstraction has 1104 states and 1530 transitions. [2020-10-29 10:06:47,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:06:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1530 transitions. [2020-10-29 10:06:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 10:06:47,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:47,732 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] [2020-10-29 10:06:47,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 10:06:47,732 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash 935344022, now seen corresponding path program 1 times [2020-10-29 10:06:47,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:47,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781124776] [2020-10-29 10:06:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 10:06:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-29 10:06:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:06:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:06:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:06:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:48,417 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:06:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:48,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:48,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:48,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:48,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:48,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:48,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:48,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 10:06:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 10:06:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:06:48,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:06:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:06:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:06:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:06:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:48,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 10:06:48,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 10:06:48,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 10:06:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:48,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:48,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:48,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:06:48,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:48,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:48,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:48,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781124776] [2020-10-29 10:06:48,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:48,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:06:48,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482314913] [2020-10-29 10:06:48,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:06:48,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:06:48,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:06:48,693 INFO L87 Difference]: Start difference. First operand 1104 states and 1530 transitions. Second operand 11 states. [2020-10-29 10:06:48,842 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 10:06:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:52,743 INFO L93 Difference]: Finished difference Result 1802 states and 2476 transitions. [2020-10-29 10:06:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:06:52,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-29 10:06:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:52,750 INFO L225 Difference]: With dead ends: 1802 [2020-10-29 10:06:52,750 INFO L226 Difference]: Without dead ends: 1103 [2020-10-29 10:06:52,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:06:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-10-29 10:06:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1093. [2020-10-29 10:06:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-10-29 10:06:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1479 transitions. [2020-10-29 10:06:52,894 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1479 transitions. Word has length 70 [2020-10-29 10:06:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:52,894 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1479 transitions. [2020-10-29 10:06:52,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:06:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1479 transitions. [2020-10-29 10:06:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 10:06:52,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:52,898 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] [2020-10-29 10:06:52,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 10:06:52,898 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:52,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1393103877, now seen corresponding path program 1 times [2020-10-29 10:06:52,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:52,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129244785] [2020-10-29 10:06:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 10:06:53,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 10:06:53,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 10:06:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:06:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:06:53,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:53,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:06:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 10:06:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 10:06:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:06:53,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:06:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:06:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:06:53,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:06:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:53,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129244785] [2020-10-29 10:06:53,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:53,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:06:53,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440164130] [2020-10-29 10:06:53,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:06:53,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:06:53,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:06:53,339 INFO L87 Difference]: Start difference. First operand 1093 states and 1479 transitions. Second operand 9 states. [2020-10-29 10:06:53,500 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:06:54,227 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 10:06:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:57,442 INFO L93 Difference]: Finished difference Result 1555 states and 2069 transitions. [2020-10-29 10:06:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:06:57,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-29 10:06:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:57,448 INFO L225 Difference]: With dead ends: 1555 [2020-10-29 10:06:57,448 INFO L226 Difference]: Without dead ends: 899 [2020-10-29 10:06:57,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:06:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-10-29 10:06:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 877. [2020-10-29 10:06:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-29 10:06:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1178 transitions. [2020-10-29 10:06:57,559 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1178 transitions. Word has length 58 [2020-10-29 10:06:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:57,560 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1178 transitions. [2020-10-29 10:06:57,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:06:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1178 transitions. [2020-10-29 10:06:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 10:06:57,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:57,563 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] [2020-10-29 10:06:57,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 10:06:57,563 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash -2114803325, now seen corresponding path program 1 times [2020-10-29 10:06:57,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:57,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343861900] [2020-10-29 10:06:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:57,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:57,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 10:06:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 10:06:57,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:57,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:06:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:06:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 10:06:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:58,032 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:06:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:58,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:58,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:06:58,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:58,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:58,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:58,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:06:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:58,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:58,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:06:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:58,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 10:06:58,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 10:06:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:58,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:06:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 10:06:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:06:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 10:06:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 10:06:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:58,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:06:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:06:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:06:58,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:06:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:58,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:06:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:58,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343861900] [2020-10-29 10:06:58,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:58,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 10:06:58,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839566413] [2020-10-29 10:06:58,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:06:58,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:58,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:06:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:06:58,547 INFO L87 Difference]: Start difference. First operand 877 states and 1178 transitions. Second operand 15 states. [2020-10-29 10:06:59,042 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:07:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:03,099 INFO L93 Difference]: Finished difference Result 905 states and 1209 transitions. [2020-10-29 10:07:03,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:07:03,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-29 10:07:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:03,104 INFO L225 Difference]: With dead ends: 905 [2020-10-29 10:07:03,105 INFO L226 Difference]: Without dead ends: 866 [2020-10-29 10:07:03,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:07:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-29 10:07:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2020-10-29 10:07:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-10-29 10:07:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1152 transitions. [2020-10-29 10:07:03,229 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1152 transitions. Word has length 56 [2020-10-29 10:07:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:03,229 INFO L481 AbstractCegarLoop]: Abstraction has 866 states and 1152 transitions. [2020-10-29 10:07:03,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:07:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1152 transitions. [2020-10-29 10:07:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 10:07:03,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:03,232 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] [2020-10-29 10:07:03,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 10:07:03,232 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash 368156238, now seen corresponding path program 1 times [2020-10-29 10:07:03,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:03,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712135091] [2020-10-29 10:07:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 10:07:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-29 10:07:03,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:03,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:07:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 10:07:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:07:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:03,764 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:07:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:07:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:03,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:03,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:03,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:03,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:03,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:03,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:03,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:03,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:03,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:03,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:03,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 10:07:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:03,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 10:07:03,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 10:07:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:03,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:07:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:07:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:07:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:07:04,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 10:07:04,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:07:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:07:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:07:04,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:07:04,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 10:07:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:04,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712135091] [2020-10-29 10:07:04,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:04,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 10:07:04,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311967902] [2020-10-29 10:07:04,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:07:04,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:04,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:07:04,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:07:04,180 INFO L87 Difference]: Start difference. First operand 866 states and 1152 transitions. Second operand 15 states. [2020-10-29 10:07:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:09,829 INFO L93 Difference]: Finished difference Result 883 states and 1170 transitions. [2020-10-29 10:07:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:07:09,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-29 10:07:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:09,834 INFO L225 Difference]: With dead ends: 883 [2020-10-29 10:07:09,834 INFO L226 Difference]: Without dead ends: 864 [2020-10-29 10:07:09,835 INFO L677 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 [2020-10-29 10:07:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-29 10:07:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2020-10-29 10:07:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-29 10:07:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1148 transitions. [2020-10-29 10:07:09,939 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1148 transitions. Word has length 57 [2020-10-29 10:07:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:09,939 INFO L481 AbstractCegarLoop]: Abstraction has 864 states and 1148 transitions. [2020-10-29 10:07:09,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:07:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1148 transitions. [2020-10-29 10:07:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 10:07:09,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:09,942 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] [2020-10-29 10:07:09,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 10:07:09,943 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:09,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1687598629, now seen corresponding path program 1 times [2020-10-29 10:07:09,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:09,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479857769] [2020-10-29 10:07:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 10:07:10,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 10:07:10,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:07:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 10:07:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:07:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,418 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:07:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:07:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:10,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:10,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:10,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:10,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 10:07:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 10:07:10,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 10:07:10,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:07:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 10:07:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 10:07:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:07:10,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 10:07:10,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:07:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:07:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:07:10,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 10:07:10,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 10:07:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:10,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479857769] [2020-10-29 10:07:10,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:10,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 10:07:10,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579931329] [2020-10-29 10:07:10,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:07:10,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:10,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:07:10,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:07:10,986 INFO L87 Difference]: Start difference. First operand 864 states and 1148 transitions. Second operand 15 states. [2020-10-29 10:07:15,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:15,691 INFO L93 Difference]: Finished difference Result 878 states and 1163 transitions. [2020-10-29 10:07:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:07:15,692 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-29 10:07:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:15,696 INFO L225 Difference]: With dead ends: 878 [2020-10-29 10:07:15,696 INFO L226 Difference]: Without dead ends: 859 [2020-10-29 10:07:15,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:07:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-10-29 10:07:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2020-10-29 10:07:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-10-29 10:07:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1141 transitions. [2020-10-29 10:07:15,814 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1141 transitions. Word has length 56 [2020-10-29 10:07:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:15,815 INFO L481 AbstractCegarLoop]: Abstraction has 859 states and 1141 transitions. [2020-10-29 10:07:15,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:07:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1141 transitions. [2020-10-29 10:07:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 10:07:15,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:15,818 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] [2020-10-29 10:07:15,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 10:07:15,818 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:15,819 INFO L82 PathProgramCache]: Analyzing trace with hash -986766060, now seen corresponding path program 1 times [2020-10-29 10:07:15,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:15,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815115623] [2020-10-29 10:07:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:17,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:17,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 10:07:17,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:07:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-29 10:07:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:17,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:07:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 10:07:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 10:07:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:17,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:17,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:17,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:17,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:17,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:07:17,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:17,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:17,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:17,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:17,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:17,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:17,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:17,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:17,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:17,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:17,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:07:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:07:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 10:07:18,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:18,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 10:07:18,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:07:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 10:07:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:07:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:07:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 10:07:18,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:18,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:18,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815115623] [2020-10-29 10:07:18,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:18,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 10:07:18,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723305484] [2020-10-29 10:07:18,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 10:07:18,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:18,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 10:07:18,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:07:18,723 INFO L87 Difference]: Start difference. First operand 859 states and 1141 transitions. Second operand 19 states. [2020-10-29 10:07:19,494 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:07:19,799 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 10:07:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:24,544 INFO L93 Difference]: Finished difference Result 888 states and 1178 transitions. [2020-10-29 10:07:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 10:07:24,548 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-29 10:07:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:24,552 INFO L225 Difference]: With dead ends: 888 [2020-10-29 10:07:24,552 INFO L226 Difference]: Without dead ends: 864 [2020-10-29 10:07:24,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:07:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-29 10:07:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2020-10-29 10:07:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-29 10:07:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1152 transitions. [2020-10-29 10:07:24,672 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1152 transitions. Word has length 63 [2020-10-29 10:07:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:24,673 INFO L481 AbstractCegarLoop]: Abstraction has 864 states and 1152 transitions. [2020-10-29 10:07:24,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 10:07:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1152 transitions. [2020-10-29 10:07:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 10:07:24,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:24,676 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] [2020-10-29 10:07:24,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 10:07:24,676 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1418231997, now seen corresponding path program 1 times [2020-10-29 10:07:24,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:24,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32793818] [2020-10-29 10:07:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 10:07:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:07:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-29 10:07:26,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:26,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:07:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 10:07:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 10:07:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:26,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:07:26,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:26,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:26,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:26,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:26,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:07:26,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:26,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:26,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:26,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:26,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:26,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:26,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:26,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:26,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:07:26,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-29 10:07:26,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:26,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:07:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:07:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:07:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:07:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 10:07:27,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:07:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:07:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:07:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:07:27,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 10:07:27,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:27,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32793818] [2020-10-29 10:07:27,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:27,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 10:07:27,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64445978] [2020-10-29 10:07:27,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 10:07:27,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:27,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 10:07:27,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:07:27,523 INFO L87 Difference]: Start difference. First operand 864 states and 1152 transitions. Second operand 19 states. [2020-10-29 10:07:28,258 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:07:28,586 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 10:07:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:34,074 INFO L93 Difference]: Finished difference Result 888 states and 1177 transitions. [2020-10-29 10:07:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 10:07:34,075 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-29 10:07:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:34,083 INFO L225 Difference]: With dead ends: 888 [2020-10-29 10:07:34,083 INFO L226 Difference]: Without dead ends: 864 [2020-10-29 10:07:34,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:07:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-29 10:07:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2020-10-29 10:07:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-10-29 10:07:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1151 transitions. [2020-10-29 10:07:34,188 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1151 transitions. Word has length 60 [2020-10-29 10:07:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:34,188 INFO L481 AbstractCegarLoop]: Abstraction has 864 states and 1151 transitions. [2020-10-29 10:07:34,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 10:07:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1151 transitions. [2020-10-29 10:07:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 10:07:34,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:34,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:07:34,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 10:07:34,192 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash -712006446, now seen corresponding path program 1 times [2020-10-29 10:07:34,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:34,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539115294] [2020-10-29 10:07:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 10:07:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-29 10:07:34,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:07:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 10:07:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:07:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:07:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:34,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:34,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:34,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:34,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:35,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:35,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 10:07:35,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 10:07:35,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:35,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:07:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:07:35,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:07:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:07:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:07:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 10:07:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:07:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:07:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:35,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:35,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:35,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:35,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:35,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:35,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:35,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539115294] [2020-10-29 10:07:35,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:35,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 10:07:35,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888261156] [2020-10-29 10:07:35,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 10:07:35,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:35,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 10:07:35,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:07:35,650 INFO L87 Difference]: Start difference. First operand 864 states and 1151 transitions. Second operand 19 states. [2020-10-29 10:07:36,509 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:07:36,861 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 10:07:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:42,013 INFO L93 Difference]: Finished difference Result 889 states and 1177 transitions. [2020-10-29 10:07:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 10:07:42,014 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-29 10:07:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:42,020 INFO L225 Difference]: With dead ends: 889 [2020-10-29 10:07:42,020 INFO L226 Difference]: Without dead ends: 864 [2020-10-29 10:07:42,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:07:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-29 10:07:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 862. [2020-10-29 10:07:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-29 10:07:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1147 transitions. [2020-10-29 10:07:42,117 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1147 transitions. Word has length 63 [2020-10-29 10:07:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:42,118 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1147 transitions. [2020-10-29 10:07:42,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 10:07:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1147 transitions. [2020-10-29 10:07:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 10:07:42,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:42,121 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] [2020-10-29 10:07:42,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 10:07:42,121 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1692991611, now seen corresponding path program 1 times [2020-10-29 10:07:42,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:42,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370166331] [2020-10-29 10:07:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:42,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:42,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 10:07:42,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-29 10:07:42,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:42,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:07:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:07:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:07:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:42,724 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:07:42,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:42,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:42,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:42,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:42,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:42,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:42,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:42,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:07:43,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 10:07:43,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:07:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:07:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:07:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:07:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:07:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:07:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:07:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:43,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:43,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:43,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370166331] [2020-10-29 10:07:43,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:43,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 10:07:43,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682408640] [2020-10-29 10:07:43,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 10:07:43,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:43,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 10:07:43,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:07:43,478 INFO L87 Difference]: Start difference. First operand 862 states and 1147 transitions. Second operand 19 states. [2020-10-29 10:07:43,973 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:07:44,401 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:07:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:48,915 INFO L93 Difference]: Finished difference Result 889 states and 1176 transitions. [2020-10-29 10:07:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 10:07:48,916 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-29 10:07:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:48,919 INFO L225 Difference]: With dead ends: 889 [2020-10-29 10:07:48,920 INFO L226 Difference]: Without dead ends: 863 [2020-10-29 10:07:48,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:07:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-29 10:07:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861. [2020-10-29 10:07:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-10-29 10:07:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1136 transitions. [2020-10-29 10:07:49,007 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1136 transitions. Word has length 60 [2020-10-29 10:07:49,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:49,008 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1136 transitions. [2020-10-29 10:07:49,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 10:07:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1136 transitions. [2020-10-29 10:07:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 10:07:49,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:49,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:07:49,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 10:07:49,010 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:49,011 INFO L82 PathProgramCache]: Analyzing trace with hash 123679114, now seen corresponding path program 1 times [2020-10-29 10:07:49,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:49,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777287874] [2020-10-29 10:07:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:07:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 10:07:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 10:07:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,372 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:07:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 10:07:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 10:07:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:07:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 10:07:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:07:49,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 10:07:49,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:07:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:07:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:07:49,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:07:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 10:07:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777287874] [2020-10-29 10:07:49,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:49,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-29 10:07:49,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878422757] [2020-10-29 10:07:49,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:07:49,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:07:49,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:07:49,845 INFO L87 Difference]: Start difference. First operand 861 states and 1136 transitions. Second operand 16 states. [2020-10-29 10:07:54,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:54,734 INFO L93 Difference]: Finished difference Result 879 states and 1155 transitions. [2020-10-29 10:07:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:07:54,735 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-29 10:07:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:54,739 INFO L225 Difference]: With dead ends: 879 [2020-10-29 10:07:54,739 INFO L226 Difference]: Without dead ends: 858 [2020-10-29 10:07:54,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:07:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-10-29 10:07:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2020-10-29 10:07:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-29 10:07:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1131 transitions. [2020-10-29 10:07:54,826 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1131 transitions. Word has length 59 [2020-10-29 10:07:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:54,826 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 1131 transitions. [2020-10-29 10:07:54,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:07:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1131 transitions. [2020-10-29 10:07:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 10:07:54,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:54,828 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] [2020-10-29 10:07:54,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 10:07:54,828 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:54,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1025774681, now seen corresponding path program 1 times [2020-10-29 10:07:54,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:54,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262439784] [2020-10-29 10:07:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 10:07:55,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-29 10:07:55,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:07:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 10:07:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:07:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:55,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:55,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:55,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:55,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:55,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 10:07:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:55,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 10:07:55,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 10:07:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:55,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:55,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:55,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:55,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:55,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:55,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:55,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:55,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262439784] [2020-10-29 10:07:55,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:55,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 10:07:55,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414651828] [2020-10-29 10:07:55,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:07:55,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:07:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:07:55,846 INFO L87 Difference]: Start difference. First operand 858 states and 1131 transitions. Second operand 15 states. [2020-10-29 10:07:56,912 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:08:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:00,263 INFO L93 Difference]: Finished difference Result 881 states and 1155 transitions. [2020-10-29 10:08:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:08:00,264 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-29 10:08:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:00,268 INFO L225 Difference]: With dead ends: 881 [2020-10-29 10:08:00,269 INFO L226 Difference]: Without dead ends: 846 [2020-10-29 10:08:00,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:08:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-29 10:08:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2020-10-29 10:08:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-29 10:08:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1110 transitions. [2020-10-29 10:08:00,366 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1110 transitions. Word has length 60 [2020-10-29 10:08:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:00,366 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1110 transitions. [2020-10-29 10:08:00,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:08:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1110 transitions. [2020-10-29 10:08:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 10:08:00,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:00,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:08:00,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 10:08:00,369 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash 444977214, now seen corresponding path program 1 times [2020-10-29 10:08:00,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:00,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865342926] [2020-10-29 10:08:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:00,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:08:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 10:08:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 10:08:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:01,310 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:08:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:01,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:08:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:08:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:08:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:01,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:08:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 10:08:01,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 10:08:01,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:01,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:01,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 10:08:01,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:08:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:08:02,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:08:02,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:08:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:08:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:08:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 10:08:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:02,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:02,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865342926] [2020-10-29 10:08:02,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:02,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-29 10:08:02,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707619341] [2020-10-29 10:08:02,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 10:08:02,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:02,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 10:08:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:08:02,128 INFO L87 Difference]: Start difference. First operand 846 states and 1110 transitions. Second operand 18 states. [2020-10-29 10:08:02,953 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 10:08:03,273 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:08:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:07,767 INFO L93 Difference]: Finished difference Result 1021 states and 1345 transitions. [2020-10-29 10:08:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 10:08:07,767 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-29 10:08:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:07,771 INFO L225 Difference]: With dead ends: 1021 [2020-10-29 10:08:07,771 INFO L226 Difference]: Without dead ends: 889 [2020-10-29 10:08:07,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-29 10:08:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-10-29 10:08:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 851. [2020-10-29 10:08:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-10-29 10:08:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1121 transitions. [2020-10-29 10:08:07,859 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1121 transitions. Word has length 61 [2020-10-29 10:08:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:07,859 INFO L481 AbstractCegarLoop]: Abstraction has 851 states and 1121 transitions. [2020-10-29 10:08:07,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 10:08:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1121 transitions. [2020-10-29 10:08:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 10:08:07,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:07,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:08:07,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 10:08:07,862 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:07,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1457594113, now seen corresponding path program 1 times [2020-10-29 10:08:07,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:07,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754558608] [2020-10-29 10:08:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:07,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 10:08:08,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:08:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:08,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:08:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 10:08:08,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 10:08:08,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:08:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 10:08:08,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:08:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 10:08:08,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 10:08:08,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 10:08:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 10:08:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:08,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:08,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:08,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:08,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:08,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754558608] [2020-10-29 10:08:08,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:08,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 10:08:08,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704295135] [2020-10-29 10:08:08,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:08:08,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:08:08,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:08:08,761 INFO L87 Difference]: Start difference. First operand 851 states and 1121 transitions. Second operand 15 states. [2020-10-29 10:08:09,903 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 10:08:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:12,843 INFO L93 Difference]: Finished difference Result 883 states and 1159 transitions. [2020-10-29 10:08:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:08:12,843 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-10-29 10:08:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:12,847 INFO L225 Difference]: With dead ends: 883 [2020-10-29 10:08:12,847 INFO L226 Difference]: Without dead ends: 843 [2020-10-29 10:08:12,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:08:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-10-29 10:08:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2020-10-29 10:08:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-10-29 10:08:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1105 transitions. [2020-10-29 10:08:12,945 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1105 transitions. Word has length 61 [2020-10-29 10:08:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:12,945 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1105 transitions. [2020-10-29 10:08:12,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:08:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1105 transitions. [2020-10-29 10:08:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 10:08:12,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:12,947 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] [2020-10-29 10:08:12,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 10:08:12,948 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:12,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1213682715, now seen corresponding path program 1 times [2020-10-29 10:08:12,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:12,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457135781] [2020-10-29 10:08:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:08:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 10:08:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 10:08:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:13,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:13,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:13,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:13,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:13,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:13,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:13,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:08:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 10:08:13,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 10:08:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:08:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:08:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 10:08:13,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:08:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:08:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:08:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:08:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 10:08:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:13,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:13,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:13,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457135781] [2020-10-29 10:08:13,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:13,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-29 10:08:13,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170192694] [2020-10-29 10:08:13,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 10:08:13,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 10:08:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:08:13,960 INFO L87 Difference]: Start difference. First operand 843 states and 1105 transitions. Second operand 18 states. [2020-10-29 10:08:15,064 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:08:15,556 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:08:15,838 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:08:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:18,914 INFO L93 Difference]: Finished difference Result 892 states and 1174 transitions. [2020-10-29 10:08:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:08:18,915 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-10-29 10:08:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:18,918 INFO L225 Difference]: With dead ends: 892 [2020-10-29 10:08:18,918 INFO L226 Difference]: Without dead ends: 857 [2020-10-29 10:08:18,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-29 10:08:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-29 10:08:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 847. [2020-10-29 10:08:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-10-29 10:08:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1123 transitions. [2020-10-29 10:08:19,015 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1123 transitions. Word has length 62 [2020-10-29 10:08:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:19,015 INFO L481 AbstractCegarLoop]: Abstraction has 847 states and 1123 transitions. [2020-10-29 10:08:19,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 10:08:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1123 transitions. [2020-10-29 10:08:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 10:08:19,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:19,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:08:19,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 10:08:19,017 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1939251672, now seen corresponding path program 1 times [2020-10-29 10:08:19,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:19,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166811558] [2020-10-29 10:08:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 10:08:19,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 10:08:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 10:08:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:08:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:19,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:19,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:08:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:08:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 10:08:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 10:08:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 10:08:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:08:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 10:08:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:19,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:08:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:19,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166811558] [2020-10-29 10:08:19,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:19,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:08:19,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955310020] [2020-10-29 10:08:19,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:08:19,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:19,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:08:19,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:08:19,557 INFO L87 Difference]: Start difference. First operand 847 states and 1123 transitions. Second operand 9 states. [2020-10-29 10:08:19,694 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 10:08:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:22,521 INFO L93 Difference]: Finished difference Result 889 states and 1175 transitions. [2020-10-29 10:08:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 10:08:22,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-29 10:08:22,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:22,526 INFO L225 Difference]: With dead ends: 889 [2020-10-29 10:08:22,526 INFO L226 Difference]: Without dead ends: 884 [2020-10-29 10:08:22,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:08:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-10-29 10:08:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 846. [2020-10-29 10:08:22,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-29 10:08:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1121 transitions. [2020-10-29 10:08:22,623 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1121 transitions. Word has length 61 [2020-10-29 10:08:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:22,624 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1121 transitions. [2020-10-29 10:08:22,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:08:22,624 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1121 transitions. [2020-10-29 10:08:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 10:08:22,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:22,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:08:22,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 10:08:22,626 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:22,627 INFO L82 PathProgramCache]: Analyzing trace with hash 644092153, now seen corresponding path program 1 times [2020-10-29 10:08:22,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:22,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81946593] [2020-10-29 10:08:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:22,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:22,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 10:08:22,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 10:08:22,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:22,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:08:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 10:08:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:08:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,143 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:08:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:23,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:23,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:08:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 10:08:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 10:08:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:08:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 10:08:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:08:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 10:08:23,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 10:08:23,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:08:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:08:23,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 10:08:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:08:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:08:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:08:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:23,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:23,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:08:23,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 10:08:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:23,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81946593] [2020-10-29 10:08:23,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:23,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 10:08:23,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036543995] [2020-10-29 10:08:23,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 10:08:23,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:23,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 10:08:23,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:08:23,907 INFO L87 Difference]: Start difference. First operand 846 states and 1121 transitions. Second operand 19 states. [2020-10-29 10:08:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:29,296 INFO L93 Difference]: Finished difference Result 864 states and 1140 transitions. [2020-10-29 10:08:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 10:08:29,297 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2020-10-29 10:08:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:29,300 INFO L225 Difference]: With dead ends: 864 [2020-10-29 10:08:29,301 INFO L226 Difference]: Without dead ends: 835 [2020-10-29 10:08:29,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-29 10:08:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-29 10:08:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2020-10-29 10:08:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-29 10:08:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1106 transitions. [2020-10-29 10:08:29,399 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1106 transitions. Word has length 70 [2020-10-29 10:08:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:29,399 INFO L481 AbstractCegarLoop]: Abstraction has 835 states and 1106 transitions. [2020-10-29 10:08:29,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 10:08:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1106 transitions. [2020-10-29 10:08:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 10:08:29,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:29,401 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] [2020-10-29 10:08:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 10:08:29,401 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:29,401 INFO L82 PathProgramCache]: Analyzing trace with hash -847626466, now seen corresponding path program 1 times [2020-10-29 10:08:29,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:29,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069599051] [2020-10-29 10:08:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 10:08:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 10:08:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:08:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,793 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 10:08:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:29,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:29,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:08:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 10:08:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 10:08:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:08:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 10:08:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0