/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=DEEPEST --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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:40:58,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:40:58,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:40:58,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:40:58,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:40:58,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:40:58,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:40:58,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:40:58,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:40:58,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:40:58,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:40:58,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:40:58,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:40:58,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:40:58,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:40:58,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:40:58,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:40:58,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:40:58,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:40:58,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:40:58,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:40:58,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:40:58,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:40:58,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:40:58,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:40:58,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:40:58,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:40:58,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:40:58,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:40:58,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:40:58,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:40:58,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:40:58,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:40:58,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:40:58,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:40:58,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:40:58,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:40:58,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:40:58,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:40:58,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:40:58,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:40:59,006 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 [2020-10-27 20:40:59,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:40:59,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:40:59,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:40:59,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:40:59,058 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:40:59,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:40:59,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:40:59,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:40:59,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:40:59,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:40:59,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:40:59,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:40:59,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:40:59,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:40:59,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:40:59,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:40:59,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:40:59,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:40:59,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:40:59,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:40:59,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:40:59,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:40:59,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:40:59,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:40:59,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:40:59,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:40:59,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:40:59,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:40:59,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:40:59,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:40:59,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:40:59,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:40:59,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:40:59,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:40:59,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:40:59,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-27 20:40:59,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd53a0af/87b89c380fa34e7da909b1a7692a985a/FLAG9d131523f [2020-10-27 20:41:00,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:41:00,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-27 20:41:00,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd53a0af/87b89c380fa34e7da909b1a7692a985a/FLAG9d131523f [2020-10-27 20:41:00,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd53a0af/87b89c380fa34e7da909b1a7692a985a [2020-10-27 20:41:00,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:41:00,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:41:00,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:41:00,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:41:00,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:41:00,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:41:00" (1/1) ... [2020-10-27 20:41:00,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35906d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:00, skipping insertion in model container [2020-10-27 20:41:00,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:41:00" (1/1) ... [2020-10-27 20:41:00,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:41:00,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:41:00,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:41:00,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:41:01,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:41:01,272 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:41:01,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01 WrapperNode [2020-10-27 20:41:01,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:41:01,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:41:01,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:41:01,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:41:01,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (1/1) ... [2020-10-27 20:41:01,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:41:01,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:41:01,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:41:01,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:41:01,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (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 [2020-10-27 20:41:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:41:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:41:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:41:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-27 20:41:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-27 20:41:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-27 20:41:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-27 20:41:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-27 20:41:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-27 20:41:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-27 20:41:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-27 20:41:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-27 20:41:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-27 20:41:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-27 20:41:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-27 20:41:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-27 20:41:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-27 20:41:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:41:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-27 20:41:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-27 20:41:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-27 20:41:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-27 20:41:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-27 20:41:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-27 20:41:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-27 20:41:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:41:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:41:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-27 20:41:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-27 20:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-27 20:41:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-27 20:41:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-27 20:41:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-27 20:41:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-27 20:41:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-27 20:41:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-27 20:41:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-27 20:41:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-27 20:41:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-27 20:41:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:41:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-27 20:41:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:41:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:41:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:41:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:41:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:41:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:41:02,172 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,280 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-27 20:41:02,280 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-27 20:41:02,286 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,325 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-27 20:41:02,325 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-27 20:41:02,349 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,366 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-27 20:41:02,367 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-27 20:41:02,429 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,474 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-27 20:41:02,474 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2020-10-27 20:41:02,474 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-27 20:41:02,479 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,659 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-27 20:41:02,659 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-27 20:41:02,660 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,692 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-27 20:41:02,693 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-27 20:41:02,732 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,752 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-27 20:41:02,752 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-27 20:41:02,757 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,939 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-27 20:41:02,939 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-27 20:41:02,954 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:02,960 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:02,960 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:02,995 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:41:02,995 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:41:02,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:41:02 BoogieIcfgContainer [2020-10-27 20:41:02,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:41:03,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:41:03,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:41:03,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:41:03,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:41:00" (1/3) ... [2020-10-27 20:41:03,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd2109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:41:03, skipping insertion in model container [2020-10-27 20:41:03,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:01" (2/3) ... [2020-10-27 20:41:03,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd2109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:41:03, skipping insertion in model container [2020-10-27 20:41:03,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:41:02" (3/3) ... [2020-10-27 20:41:03,007 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2020-10-27 20:41:03,019 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:41:03,025 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:41:03,039 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:41:03,069 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:41:03,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:41:03,070 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:41:03,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:41:03,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:41:03,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:41:03,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:41:03,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:41:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2020-10-27 20:41:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:41:03,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:03,108 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] [2020-10-27 20:41:03,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:03,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:03,115 INFO L82 PathProgramCache]: Analyzing trace with hash 622325898, now seen corresponding path program 1 times [2020-10-27 20:41:03,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:03,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220145244] [2020-10-27 20:41:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:03,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:04,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:04,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:41:04,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:41:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-27 20:41:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:41:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:41:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:41:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:04,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 20:41:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:41:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:04,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220145244] [2020-10-27 20:41:04,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:04,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:41:04,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569508153] [2020-10-27 20:41:04,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:41:04,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:04,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:41:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:41:04,461 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 5 states. [2020-10-27 20:41:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:08,600 INFO L93 Difference]: Finished difference Result 1223 states and 1938 transitions. [2020-10-27 20:41:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:08,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 20:41:08,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:08,625 INFO L225 Difference]: With dead ends: 1223 [2020-10-27 20:41:08,625 INFO L226 Difference]: Without dead ends: 842 [2020-10-27 20:41:08,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:41:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-27 20:41:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 674. [2020-10-27 20:41:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-27 20:41:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 966 transitions. [2020-10-27 20:41:08,812 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 966 transitions. Word has length 21 [2020-10-27 20:41:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:08,813 INFO L481 AbstractCegarLoop]: Abstraction has 674 states and 966 transitions. [2020-10-27 20:41:08,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:41:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 966 transitions. [2020-10-27 20:41:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:41:08,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:08,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:08,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:41:08,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:08,816 INFO L82 PathProgramCache]: Analyzing trace with hash 157610323, now seen corresponding path program 1 times [2020-10-27 20:41:08,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:08,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933438896] [2020-10-27 20:41:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:08,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:41:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 20:41:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:41:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:41:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:09,147 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:41:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:09,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:09,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:09,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:41:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:41:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:09,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933438896] [2020-10-27 20:41:09,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:09,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:41:09,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811747103] [2020-10-27 20:41:09,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:41:09,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:09,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:41:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:41:09,246 INFO L87 Difference]: Start difference. First operand 674 states and 966 transitions. Second operand 5 states. [2020-10-27 20:41:09,401 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 20:41:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:13,069 INFO L93 Difference]: Finished difference Result 850 states and 1266 transitions. [2020-10-27 20:41:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:13,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 20:41:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:13,087 INFO L225 Difference]: With dead ends: 850 [2020-10-27 20:41:13,087 INFO L226 Difference]: Without dead ends: 833 [2020-10-27 20:41:13,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-27 20:41:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 674. [2020-10-27 20:41:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-27 20:41:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 965 transitions. [2020-10-27 20:41:13,207 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 965 transitions. Word has length 21 [2020-10-27 20:41:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:13,214 INFO L481 AbstractCegarLoop]: Abstraction has 674 states and 965 transitions. [2020-10-27 20:41:13,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:41:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 965 transitions. [2020-10-27 20:41:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:41:13,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:13,217 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] [2020-10-27 20:41:13,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:41:13,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:13,218 INFO L82 PathProgramCache]: Analyzing trace with hash -91384539, now seen corresponding path program 1 times [2020-10-27 20:41:13,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:13,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629341316] [2020-10-27 20:41:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:13,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 20:41:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 20:41:13,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:41:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:41:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:41:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:41:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:13,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:13,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:13,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:13,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:41:13,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:13,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:13,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:13,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:41:13,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:13,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:13,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:13,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:13,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:41:13,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 20:41:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:13,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629341316] [2020-10-27 20:41:13,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:13,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:13,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004224621] [2020-10-27 20:41:13,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:13,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:13,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:13,667 INFO L87 Difference]: Start difference. First operand 674 states and 965 transitions. Second operand 6 states. [2020-10-27 20:41:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:18,287 INFO L93 Difference]: Finished difference Result 1362 states and 1971 transitions. [2020-10-27 20:41:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:18,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 20:41:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:18,297 INFO L225 Difference]: With dead ends: 1362 [2020-10-27 20:41:18,298 INFO L226 Difference]: Without dead ends: 1140 [2020-10-27 20:41:18,299 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 [2020-10-27 20:41:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-10-27 20:41:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 885. [2020-10-27 20:41:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-27 20:41:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1278 transitions. [2020-10-27 20:41:18,404 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1278 transitions. Word has length 26 [2020-10-27 20:41:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:18,405 INFO L481 AbstractCegarLoop]: Abstraction has 885 states and 1278 transitions. [2020-10-27 20:41:18,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1278 transitions. [2020-10-27 20:41:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 20:41:18,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:18,407 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] [2020-10-27 20:41:18,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:41:18,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1829358983, now seen corresponding path program 1 times [2020-10-27 20:41:18,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:18,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386712745] [2020-10-27 20:41:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:18,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 20:41:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-27 20:41:18,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:41:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:41:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:41:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:18,913 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:41:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:18,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:18,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:18,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:41:18,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:18,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:19,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:19,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:19,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:41:19,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:19,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386712745] [2020-10-27 20:41:19,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:19,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:19,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037429544] [2020-10-27 20:41:19,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:19,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:19,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:19,033 INFO L87 Difference]: Start difference. First operand 885 states and 1278 transitions. Second operand 6 states. [2020-10-27 20:41:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:22,945 INFO L93 Difference]: Finished difference Result 1346 states and 1935 transitions. [2020-10-27 20:41:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:22,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 20:41:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:22,954 INFO L225 Difference]: With dead ends: 1346 [2020-10-27 20:41:22,955 INFO L226 Difference]: Without dead ends: 1114 [2020-10-27 20:41:22,956 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 [2020-10-27 20:41:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2020-10-27 20:41:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 955. [2020-10-27 20:41:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-27 20:41:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1371 transitions. [2020-10-27 20:41:23,081 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1371 transitions. Word has length 31 [2020-10-27 20:41:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:23,081 INFO L481 AbstractCegarLoop]: Abstraction has 955 states and 1371 transitions. [2020-10-27 20:41:23,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1371 transitions. [2020-10-27 20:41:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 20:41:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:23,084 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] [2020-10-27 20:41:23,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:41:23,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash 42905749, now seen corresponding path program 1 times [2020-10-27 20:41:23,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:23,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076350583] [2020-10-27 20:41:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 20:41:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:41:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:23,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:23,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:41:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:23,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:23,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076350583] [2020-10-27 20:41:23,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:23,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:23,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284105986] [2020-10-27 20:41:23,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:23,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:23,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:23,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:23,748 INFO L87 Difference]: Start difference. First operand 955 states and 1371 transitions. Second operand 6 states. [2020-10-27 20:41:24,145 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 20:41:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:28,392 INFO L93 Difference]: Finished difference Result 2023 states and 3013 transitions. [2020-10-27 20:41:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:41:28,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-27 20:41:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:28,402 INFO L225 Difference]: With dead ends: 2023 [2020-10-27 20:41:28,402 INFO L226 Difference]: Without dead ends: 1621 [2020-10-27 20:41:28,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:41:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2020-10-27 20:41:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1122. [2020-10-27 20:41:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-10-27 20:41:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1661 transitions. [2020-10-27 20:41:28,531 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1661 transitions. Word has length 32 [2020-10-27 20:41:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:28,532 INFO L481 AbstractCegarLoop]: Abstraction has 1122 states and 1661 transitions. [2020-10-27 20:41:28,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1661 transitions. [2020-10-27 20:41:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 20:41:28,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:28,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:28,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:41:28,535 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1765974237, now seen corresponding path program 1 times [2020-10-27 20:41:28,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:28,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241967691] [2020-10-27 20:41:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:41:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:41:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:29,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:29,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:29,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:29,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:41:29,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:29,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:29,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:29,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:41:29,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:29,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241967691] [2020-10-27 20:41:29,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:29,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:41:29,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374872352] [2020-10-27 20:41:29,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:41:29,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:41:29,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:41:29,317 INFO L87 Difference]: Start difference. First operand 1122 states and 1661 transitions. Second operand 9 states. [2020-10-27 20:41:29,459 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 20:41:29,814 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-27 20:41:30,089 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 20:41:30,328 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-27 20:41:35,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:35,019 INFO L93 Difference]: Finished difference Result 2057 states and 3093 transitions. [2020-10-27 20:41:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:41:35,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-27 20:41:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:35,031 INFO L225 Difference]: With dead ends: 2057 [2020-10-27 20:41:35,031 INFO L226 Difference]: Without dead ends: 1294 [2020-10-27 20:41:35,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:41:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-10-27 20:41:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1024. [2020-10-27 20:41:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-27 20:41:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1473 transitions. [2020-10-27 20:41:35,163 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1473 transitions. Word has length 33 [2020-10-27 20:41:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:35,164 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1473 transitions. [2020-10-27 20:41:35,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:41:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1473 transitions. [2020-10-27 20:41:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 20:41:35,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:35,167 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] [2020-10-27 20:41:35,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:41:35,168 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:35,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1511329675, now seen corresponding path program 1 times [2020-10-27 20:41:35,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:35,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392262380] [2020-10-27 20:41:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:35,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:35,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 20:41:35,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 20:41:35,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:41:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 20:41:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:41:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:35,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:41:35,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:35,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:35,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:35,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:35,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:35,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:35,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:35,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:35,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:41:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:35,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392262380] [2020-10-27 20:41:35,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:35,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:35,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073217138] [2020-10-27 20:41:35,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:35,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:35,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:35,677 INFO L87 Difference]: Start difference. First operand 1024 states and 1473 transitions. Second operand 6 states. [2020-10-27 20:41:39,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:39,615 INFO L93 Difference]: Finished difference Result 1149 states and 1689 transitions. [2020-10-27 20:41:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:39,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-27 20:41:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:39,625 INFO L225 Difference]: With dead ends: 1149 [2020-10-27 20:41:39,625 INFO L226 Difference]: Without dead ends: 1144 [2020-10-27 20:41:39,626 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 [2020-10-27 20:41:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-10-27 20:41:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1023. [2020-10-27 20:41:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-10-27 20:41:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1470 transitions. [2020-10-27 20:41:39,740 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1470 transitions. Word has length 37 [2020-10-27 20:41:39,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:39,741 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1470 transitions. [2020-10-27 20:41:39,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1470 transitions. [2020-10-27 20:41:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 20:41:39,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:39,743 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] [2020-10-27 20:41:39,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:41:39,743 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1065431191, now seen corresponding path program 1 times [2020-10-27 20:41:39,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:39,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439226963] [2020-10-27 20:41:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:40,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:40,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 20:41:40,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:41:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-27 20:41:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:41:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:41:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:41,056 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:41:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:41,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:41,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:41,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:41,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:41,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:41,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:41:41,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:41:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:41,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439226963] [2020-10-27 20:41:41,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:41,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:41,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687688580] [2020-10-27 20:41:41,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:41,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:41,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:41,161 INFO L87 Difference]: Start difference. First operand 1023 states and 1470 transitions. Second operand 6 states. [2020-10-27 20:41:41,790 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 20:41:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:45,290 INFO L93 Difference]: Finished difference Result 1551 states and 2223 transitions. [2020-10-27 20:41:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:45,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-27 20:41:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:45,298 INFO L225 Difference]: With dead ends: 1551 [2020-10-27 20:41:45,298 INFO L226 Difference]: Without dead ends: 1082 [2020-10-27 20:41:45,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:41:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-27 20:41:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 859. [2020-10-27 20:41:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-10-27 20:41:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1217 transitions. [2020-10-27 20:41:45,409 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1217 transitions. Word has length 40 [2020-10-27 20:41:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:45,409 INFO L481 AbstractCegarLoop]: Abstraction has 859 states and 1217 transitions. [2020-10-27 20:41:45,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1217 transitions. [2020-10-27 20:41:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 20:41:45,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:45,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:45,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:41:45,412 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:45,412 INFO L82 PathProgramCache]: Analyzing trace with hash -875239682, now seen corresponding path program 1 times [2020-10-27 20:41:45,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:45,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645305389] [2020-10-27 20:41:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:45,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:45,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 20:41:45,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:45,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-27 20:41:45,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:45,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:41:45,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:41:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:41:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:41:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:45,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:45,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:45,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:41:45,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:45,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:45,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:45,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:45,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:45,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:45,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:46,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:46,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:46,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:46,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:41:46,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:46,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645305389] [2020-10-27 20:41:46,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:46,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:46,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654518706] [2020-10-27 20:41:46,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:46,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:46,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:46,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:46,029 INFO L87 Difference]: Start difference. First operand 859 states and 1217 transitions. Second operand 6 states. [2020-10-27 20:41:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:49,527 INFO L93 Difference]: Finished difference Result 1027 states and 1495 transitions. [2020-10-27 20:41:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:49,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-27 20:41:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:49,535 INFO L225 Difference]: With dead ends: 1027 [2020-10-27 20:41:49,535 INFO L226 Difference]: Without dead ends: 1023 [2020-10-27 20:41:49,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:41:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-27 20:41:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 858. [2020-10-27 20:41:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-27 20:41:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1215 transitions. [2020-10-27 20:41:49,644 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1215 transitions. Word has length 41 [2020-10-27 20:41:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:49,645 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 1215 transitions. [2020-10-27 20:41:49,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1215 transitions. [2020-10-27 20:41:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:41:49,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:49,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:49,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:41:49,649 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash 730466694, now seen corresponding path program 1 times [2020-10-27 20:41:49,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:49,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212641699] [2020-10-27 20:41:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 20:41:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:41:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 20:41:49,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 20:41:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:41:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:50,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:41:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:50,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:50,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 20:41:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:50,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212641699] [2020-10-27 20:41:50,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:50,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:41:50,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396997359] [2020-10-27 20:41:50,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:41:50,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:41:50,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:41:50,174 INFO L87 Difference]: Start difference. First operand 858 states and 1215 transitions. Second operand 7 states. [2020-10-27 20:41:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:54,148 INFO L93 Difference]: Finished difference Result 1224 states and 1770 transitions. [2020-10-27 20:41:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:41:54,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-27 20:41:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:54,154 INFO L225 Difference]: With dead ends: 1224 [2020-10-27 20:41:54,154 INFO L226 Difference]: Without dead ends: 985 [2020-10-27 20:41:54,155 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 [2020-10-27 20:41:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-27 20:41:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 854. [2020-10-27 20:41:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-10-27 20:41:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1205 transitions. [2020-10-27 20:41:54,264 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1205 transitions. Word has length 47 [2020-10-27 20:41:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:54,264 INFO L481 AbstractCegarLoop]: Abstraction has 854 states and 1205 transitions. [2020-10-27 20:41:54,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:41:54,264 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1205 transitions. [2020-10-27 20:41:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 20:41:54,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:54,267 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] [2020-10-27 20:41:54,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:41:54,268 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:54,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:54,268 INFO L82 PathProgramCache]: Analyzing trace with hash -189999525, now seen corresponding path program 1 times [2020-10-27 20:41:54,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:54,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765206706] [2020-10-27 20:41:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:55,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:41:55,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:41:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-27 20:41:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:41:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:41:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:55,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:55,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:55,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:41:55,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:55,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:55,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:55,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:55,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:55,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:55,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:41:55,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:55,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 20:41:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:55,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:41:55,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:41:55,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:55,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:41:55,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:41:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:55,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765206706] [2020-10-27 20:41:55,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:55,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:41:55,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686603364] [2020-10-27 20:41:55,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:41:55,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:55,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:41:55,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:41:55,295 INFO L87 Difference]: Start difference. First operand 854 states and 1205 transitions. Second operand 8 states. [2020-10-27 20:41:56,200 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 20:42:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:00,394 INFO L93 Difference]: Finished difference Result 1109 states and 1591 transitions. [2020-10-27 20:42:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:42:00,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-27 20:42:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:00,400 INFO L225 Difference]: With dead ends: 1109 [2020-10-27 20:42:00,400 INFO L226 Difference]: Without dead ends: 888 [2020-10-27 20:42:00,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-10-27 20:42:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 722. [2020-10-27 20:42:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-10-27 20:42:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1014 transitions. [2020-10-27 20:42:00,498 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1014 transitions. Word has length 48 [2020-10-27 20:42:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:00,499 INFO L481 AbstractCegarLoop]: Abstraction has 722 states and 1014 transitions. [2020-10-27 20:42:00,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1014 transitions. [2020-10-27 20:42:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:42:00,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:00,502 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] [2020-10-27 20:42:00,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:42:00,502 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1565108817, now seen corresponding path program 1 times [2020-10-27 20:42:00,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:00,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549230027] [2020-10-27 20:42:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:01,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:01,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 20:42:01,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:01,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-27 20:42:01,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:01,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:42:01,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:42:01,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:01,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:01,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:01,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:42:01,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:01,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:01,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:01,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:01,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 20:42:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:01,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:01,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:42:01,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:42:01,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:42:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:42:01,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:01,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549230027] [2020-10-27 20:42:01,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:01,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:01,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049538958] [2020-10-27 20:42:01,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:01,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:01,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:01,711 INFO L87 Difference]: Start difference. First operand 722 states and 1014 transitions. Second operand 8 states. [2020-10-27 20:42:01,845 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 20:42:02,576 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 20:42:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:06,606 INFO L93 Difference]: Finished difference Result 1107 states and 1589 transitions. [2020-10-27 20:42:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:42:06,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-27 20:42:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:06,612 INFO L225 Difference]: With dead ends: 1107 [2020-10-27 20:42:06,612 INFO L226 Difference]: Without dead ends: 868 [2020-10-27 20:42:06,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:42:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-10-27 20:42:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 722. [2020-10-27 20:42:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-10-27 20:42:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1010 transitions. [2020-10-27 20:42:06,719 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1010 transitions. Word has length 52 [2020-10-27 20:42:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:06,719 INFO L481 AbstractCegarLoop]: Abstraction has 722 states and 1010 transitions. [2020-10-27 20:42:06,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1010 transitions. [2020-10-27 20:42:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 20:42:06,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:06,722 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] [2020-10-27 20:42:06,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:42:06,722 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1633456827, now seen corresponding path program 1 times [2020-10-27 20:42:06,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:06,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17129426] [2020-10-27 20:42:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:42:06,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:07,127 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:42:07,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:07,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:07,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:07,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:42:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:07,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:07,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:07,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:42:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:07,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:07,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:07,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:42:07,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:42:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:07,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17129426] [2020-10-27 20:42:07,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:07,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:42:07,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779168020] [2020-10-27 20:42:07,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:42:07,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:07,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:42:07,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:42:07,284 INFO L87 Difference]: Start difference. First operand 722 states and 1010 transitions. Second operand 7 states. [2020-10-27 20:42:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:11,803 INFO L93 Difference]: Finished difference Result 1044 states and 1499 transitions. [2020-10-27 20:42:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:42:11,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-27 20:42:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:11,809 INFO L225 Difference]: With dead ends: 1044 [2020-10-27 20:42:11,809 INFO L226 Difference]: Without dead ends: 1029 [2020-10-27 20:42:11,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-10-27 20:42:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 801. [2020-10-27 20:42:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-10-27 20:42:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1102 transitions. [2020-10-27 20:42:11,917 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1102 transitions. Word has length 49 [2020-10-27 20:42:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:11,918 INFO L481 AbstractCegarLoop]: Abstraction has 801 states and 1102 transitions. [2020-10-27 20:42:11,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:42:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1102 transitions. [2020-10-27 20:42:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:42:11,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:11,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:11,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:42:11,921 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:11,922 INFO L82 PathProgramCache]: Analyzing trace with hash -28351854, now seen corresponding path program 1 times [2020-10-27 20:42:11,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:11,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873853778] [2020-10-27 20:42:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:42:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:42:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:13,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:13,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:42:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:13,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:13,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:13,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:13,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:13,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:42:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:13,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:42:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:13,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873853778] [2020-10-27 20:42:13,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:13,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:42:13,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504454132] [2020-10-27 20:42:13,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:42:13,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:42:13,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:13,346 INFO L87 Difference]: Start difference. First operand 801 states and 1102 transitions. Second operand 12 states. [2020-10-27 20:42:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:18,916 INFO L93 Difference]: Finished difference Result 949 states and 1359 transitions. [2020-10-27 20:42:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:42:18,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-27 20:42:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:18,922 INFO L225 Difference]: With dead ends: 949 [2020-10-27 20:42:18,922 INFO L226 Difference]: Without dead ends: 944 [2020-10-27 20:42:18,922 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 [2020-10-27 20:42:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2020-10-27 20:42:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 820. [2020-10-27 20:42:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-27 20:42:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1129 transitions. [2020-10-27 20:42:19,028 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1129 transitions. Word has length 50 [2020-10-27 20:42:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:19,029 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1129 transitions. [2020-10-27 20:42:19,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:42:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1129 transitions. [2020-10-27 20:42:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:42:19,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:19,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:19,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:42:19,032 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash -36933584, now seen corresponding path program 1 times [2020-10-27 20:42:19,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:19,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295544288] [2020-10-27 20:42:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:19,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:20,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:20,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 20:42:20,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:42:20,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-27 20:42:20,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:20,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:42:20,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:42:20,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:42:20,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:20,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:20,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:20,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:20,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:20,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:20,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:20,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:20,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:20,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:42:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:20,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:20,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:42:20,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:20,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295544288] [2020-10-27 20:42:20,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:20,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:42:20,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483435461] [2020-10-27 20:42:20,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:42:20,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:20,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:42:20,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:20,894 INFO L87 Difference]: Start difference. First operand 820 states and 1129 transitions. Second operand 12 states. [2020-10-27 20:42:21,968 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 20:42:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:26,204 INFO L93 Difference]: Finished difference Result 984 states and 1404 transitions. [2020-10-27 20:42:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:42:26,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-27 20:42:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:26,211 INFO L225 Difference]: With dead ends: 984 [2020-10-27 20:42:26,211 INFO L226 Difference]: Without dead ends: 962 [2020-10-27 20:42:26,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:42:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-10-27 20:42:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 840. [2020-10-27 20:42:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-27 20:42:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1153 transitions. [2020-10-27 20:42:26,320 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1153 transitions. Word has length 50 [2020-10-27 20:42:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:26,320 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 1153 transitions. [2020-10-27 20:42:26,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:42:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1153 transitions. [2020-10-27 20:42:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:42:26,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:26,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:26,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:42:26,324 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:26,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:26,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2017542624, now seen corresponding path program 1 times [2020-10-27 20:42:26,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:26,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132513253] [2020-10-27 20:42:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:42:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:42:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-27 20:42:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:42:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:42:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:26,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:26,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:26,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:26,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:26,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:26,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:26,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:26,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:26,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:27,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:42:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:42:27,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:42:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:42:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:42:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:42:27,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:42:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:42:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:27,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132513253] [2020-10-27 20:42:27,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:27,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:27,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433181839] [2020-10-27 20:42:27,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:27,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:27,070 INFO L87 Difference]: Start difference. First operand 840 states and 1153 transitions. Second operand 8 states. [2020-10-27 20:42:27,792 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 20:42:28,167 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:42:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:31,363 INFO L93 Difference]: Finished difference Result 987 states and 1401 transitions. [2020-10-27 20:42:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:42:31,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-27 20:42:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:31,369 INFO L225 Difference]: With dead ends: 987 [2020-10-27 20:42:31,369 INFO L226 Difference]: Without dead ends: 964 [2020-10-27 20:42:31,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:42:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-10-27 20:42:31,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 840. [2020-10-27 20:42:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-10-27 20:42:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1152 transitions. [2020-10-27 20:42:31,480 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1152 transitions. Word has length 51 [2020-10-27 20:42:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:31,480 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 1152 transitions. [2020-10-27 20:42:31,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1152 transitions. [2020-10-27 20:42:31,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:42:31,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:31,484 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] [2020-10-27 20:42:31,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:42:31,484 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:31,484 INFO L82 PathProgramCache]: Analyzing trace with hash 328598882, now seen corresponding path program 1 times [2020-10-27 20:42:31,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:31,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981903633] [2020-10-27 20:42:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:42:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:31,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:42:31,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:31,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:42:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:42:31,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 20:42:31,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:42:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:42:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:32,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:42:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:42:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:32,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981903633] [2020-10-27 20:42:32,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:32,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:42:32,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043399514] [2020-10-27 20:42:32,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:42:32,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:42:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:32,093 INFO L87 Difference]: Start difference. First operand 840 states and 1152 transitions. Second operand 12 states. [2020-10-27 20:42:32,330 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 20:42:32,536 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 20:42:33,135 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-27 20:42:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:37,330 INFO L93 Difference]: Finished difference Result 1050 states and 1483 transitions. [2020-10-27 20:42:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:42:37,331 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-27 20:42:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:37,336 INFO L225 Difference]: With dead ends: 1050 [2020-10-27 20:42:37,336 INFO L226 Difference]: Without dead ends: 958 [2020-10-27 20:42:37,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:42:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-27 20:42:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 837. [2020-10-27 20:42:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-27 20:42:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1144 transitions. [2020-10-27 20:42:37,453 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1144 transitions. Word has length 51 [2020-10-27 20:42:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:37,454 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1144 transitions. [2020-10-27 20:42:37,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:42:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1144 transitions. [2020-10-27 20:42:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:42:37,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:37,457 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] [2020-10-27 20:42:37,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 20:42:37,457 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:37,457 INFO L82 PathProgramCache]: Analyzing trace with hash 581108448, now seen corresponding path program 1 times [2020-10-27 20:42:37,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:37,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358311130] [2020-10-27 20:42:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:37,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:37,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:42:37,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 20:42:37,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 20:42:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:42:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:37,713 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:42:37,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:37,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:37,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:37,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:37,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:37,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:37,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:37,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:42:37,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:42:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:42:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:37,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:42:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:37,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358311130] [2020-10-27 20:42:37,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:37,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:42:37,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146512606] [2020-10-27 20:42:37,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:42:37,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:37,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:42:37,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:42:37,897 INFO L87 Difference]: Start difference. First operand 837 states and 1144 transitions. Second operand 7 states. [2020-10-27 20:42:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:42,209 INFO L93 Difference]: Finished difference Result 1015 states and 1428 transitions. [2020-10-27 20:42:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:42:42,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-27 20:42:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:42,214 INFO L225 Difference]: With dead ends: 1015 [2020-10-27 20:42:42,214 INFO L226 Difference]: Without dead ends: 979 [2020-10-27 20:42:42,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-10-27 20:42:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 844. [2020-10-27 20:42:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-27 20:42:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1146 transitions. [2020-10-27 20:42:42,331 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1146 transitions. Word has length 51 [2020-10-27 20:42:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:42,331 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1146 transitions. [2020-10-27 20:42:42,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:42:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1146 transitions. [2020-10-27 20:42:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:42:42,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:42,335 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] [2020-10-27 20:42:42,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 20:42:42,335 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1527938083, now seen corresponding path program 1 times [2020-10-27 20:42:42,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:42,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800474382] [2020-10-27 20:42:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:42:42,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:42:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 20:42:42,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:42:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 20:42:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:42,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:42:42,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:42:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:43,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800474382] [2020-10-27 20:42:43,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:43,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:43,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889389536] [2020-10-27 20:42:43,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:43,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:43,015 INFO L87 Difference]: Start difference. First operand 844 states and 1146 transitions. Second operand 8 states. [2020-10-27 20:42:43,153 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 20:42:44,745 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 20:42:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:46,281 INFO L93 Difference]: Finished difference Result 982 states and 1385 transitions. [2020-10-27 20:42:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:42:46,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-27 20:42:46,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:46,287 INFO L225 Difference]: With dead ends: 982 [2020-10-27 20:42:46,287 INFO L226 Difference]: Without dead ends: 959 [2020-10-27 20:42:46,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:42:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-27 20:42:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 831. [2020-10-27 20:42:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-27 20:42:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1130 transitions. [2020-10-27 20:42:46,406 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1130 transitions. Word has length 51 [2020-10-27 20:42:46,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:46,407 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 1130 transitions. [2020-10-27 20:42:46,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:46,407 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1130 transitions. [2020-10-27 20:42:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 20:42:46,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:46,410 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] [2020-10-27 20:42:46,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 20:42:46,410 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:46,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1844724209, now seen corresponding path program 1 times [2020-10-27 20:42:46,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:46,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696700639] [2020-10-27 20:42:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:46,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:42:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:46,882 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:42:46,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:46,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:46,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:46,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:46,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:46,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:46,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:46,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:47,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 20:42:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:42:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:47,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:47,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:42:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:47,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:47,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:47,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:47,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:42:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:47,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696700639] [2020-10-27 20:42:47,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:47,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:42:47,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943656215] [2020-10-27 20:42:47,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:42:47,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:47,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:42:47,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:42:47,308 INFO L87 Difference]: Start difference. First operand 831 states and 1130 transitions. Second operand 11 states. [2020-10-27 20:42:47,854 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:42:48,041 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 20:42:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:52,837 INFO L93 Difference]: Finished difference Result 1023 states and 1434 transitions. [2020-10-27 20:42:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:42:52,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-27 20:42:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:52,842 INFO L225 Difference]: With dead ends: 1023 [2020-10-27 20:42:52,842 INFO L226 Difference]: Without dead ends: 983 [2020-10-27 20:42:52,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:42:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-10-27 20:42:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 850. [2020-10-27 20:42:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-27 20:42:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1152 transitions. [2020-10-27 20:42:52,963 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1152 transitions. Word has length 53 [2020-10-27 20:42:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:52,963 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1152 transitions. [2020-10-27 20:42:52,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:42:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1152 transitions. [2020-10-27 20:42:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:42:52,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:52,966 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] [2020-10-27 20:42:52,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 20:42:52,967 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:52,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:52,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1759915913, now seen corresponding path program 1 times [2020-10-27 20:42:52,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:52,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542516320] [2020-10-27 20:42:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:53,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 20:42:53,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-27 20:42:53,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:42:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:42:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:53,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:53,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:53,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:53,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:53,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:53,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:53,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:42:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:53,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:42:53,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 20:42:53,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:42:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:42:53,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:42:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:53,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:42:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:42:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:53,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542516320] [2020-10-27 20:42:53,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:53,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:42:53,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620676248] [2020-10-27 20:42:53,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:42:53,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:53,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:42:53,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:53,823 INFO L87 Difference]: Start difference. First operand 850 states and 1152 transitions. Second operand 12 states. [2020-10-27 20:42:54,023 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:54,199 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 20:42:54,765 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 102 [2020-10-27 20:42:55,072 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 20:43:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:00,781 INFO L93 Difference]: Finished difference Result 1142 states and 1585 transitions. [2020-10-27 20:43:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:00,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-27 20:43:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:00,787 INFO L225 Difference]: With dead ends: 1142 [2020-10-27 20:43:00,787 INFO L226 Difference]: Without dead ends: 1056 [2020-10-27 20:43:00,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-27 20:43:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-27 20:43:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 848. [2020-10-27 20:43:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-27 20:43:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1162 transitions. [2020-10-27 20:43:00,918 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1162 transitions. Word has length 52 [2020-10-27 20:43:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:00,919 INFO L481 AbstractCegarLoop]: Abstraction has 848 states and 1162 transitions. [2020-10-27 20:43:00,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:43:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1162 transitions. [2020-10-27 20:43:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:43:00,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:00,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:00,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 20:43:00,922 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:00,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:00,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1391433226, now seen corresponding path program 1 times [2020-10-27 20:43:00,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:00,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188496688] [2020-10-27 20:43:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:01,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:01,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:43:01,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 970 [2020-10-27 20:43:01,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 20:43:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:43:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:02,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 20:43:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:43:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:02,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188496688] [2020-10-27 20:43:02,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:02,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 20:43:02,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806125089] [2020-10-27 20:43:02,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:43:02,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:02,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:43:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:43:02,467 INFO L87 Difference]: Start difference. First operand 848 states and 1162 transitions. Second operand 15 states. [2020-10-27 20:43:02,946 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 20:43:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:07,172 INFO L93 Difference]: Finished difference Result 994 states and 1404 transitions. [2020-10-27 20:43:07,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:07,175 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-27 20:43:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:07,180 INFO L225 Difference]: With dead ends: 994 [2020-10-27 20:43:07,180 INFO L226 Difference]: Without dead ends: 966 [2020-10-27 20:43:07,182 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 [2020-10-27 20:43:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-27 20:43:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 846. [2020-10-27 20:43:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-27 20:43:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1158 transitions. [2020-10-27 20:43:07,291 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1158 transitions. Word has length 55 [2020-10-27 20:43:07,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:07,291 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1158 transitions. [2020-10-27 20:43:07,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:43:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1158 transitions. [2020-10-27 20:43:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 20:43:07,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:07,294 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] [2020-10-27 20:43:07,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 20:43:07,294 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2101614674, now seen corresponding path program 1 times [2020-10-27 20:43:07,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:07,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666181854] [2020-10-27 20:43:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:07,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:07,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 20:43:07,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-27 20:43:07,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:43:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 20:43:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:43:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:07,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:07,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:07,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:07,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:07,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:07,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 20:43:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:07,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:07,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:43:07,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 20:43:07,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:43:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 20:43:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:43:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:08,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:08,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:08,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:08,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666181854] [2020-10-27 20:43:08,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:08,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 20:43:08,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548638094] [2020-10-27 20:43:08,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:43:08,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:08,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:43:08,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:43:08,119 INFO L87 Difference]: Start difference. First operand 846 states and 1158 transitions. Second operand 15 states. [2020-10-27 20:43:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:14,709 INFO L93 Difference]: Finished difference Result 983 states and 1389 transitions. [2020-10-27 20:43:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:43:14,710 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-27 20:43:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:14,715 INFO L225 Difference]: With dead ends: 983 [2020-10-27 20:43:14,715 INFO L226 Difference]: Without dead ends: 964 [2020-10-27 20:43:14,716 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 [2020-10-27 20:43:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-10-27 20:43:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 844. [2020-10-27 20:43:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-27 20:43:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1154 transitions. [2020-10-27 20:43:14,826 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1154 transitions. Word has length 57 [2020-10-27 20:43:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:14,827 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1154 transitions. [2020-10-27 20:43:14,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:43:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1154 transitions. [2020-10-27 20:43:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 20:43:14,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:14,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:14,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 20:43:14,830 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash -235468011, now seen corresponding path program 1 times [2020-10-27 20:43:14,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:14,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879860485] [2020-10-27 20:43:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 20:43:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-27 20:43:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:43:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 20:43:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:43:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,317 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:43:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:15,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:15,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:15,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:15,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 20:43:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 20:43:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:43:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 20:43:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:43:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:43:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:15,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:15,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:43:15,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:15,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:15,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879860485] [2020-10-27 20:43:15,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:15,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 20:43:15,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880403932] [2020-10-27 20:43:15,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:43:15,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:15,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:43:15,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:43:15,714 INFO L87 Difference]: Start difference. First operand 844 states and 1154 transitions. Second operand 15 states. [2020-10-27 20:43:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:22,209 INFO L93 Difference]: Finished difference Result 978 states and 1382 transitions. [2020-10-27 20:43:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:43:22,209 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-27 20:43:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:22,215 INFO L225 Difference]: With dead ends: 978 [2020-10-27 20:43:22,215 INFO L226 Difference]: Without dead ends: 959 [2020-10-27 20:43:22,216 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 [2020-10-27 20:43:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-27 20:43:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 839. [2020-10-27 20:43:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-27 20:43:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1147 transitions. [2020-10-27 20:43:22,347 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1147 transitions. Word has length 56 [2020-10-27 20:43:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:22,347 INFO L481 AbstractCegarLoop]: Abstraction has 839 states and 1147 transitions. [2020-10-27 20:43:22,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:43:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1147 transitions. [2020-10-27 20:43:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 20:43:22,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:22,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:22,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 20:43:22,351 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1849608746, now seen corresponding path program 1 times [2020-10-27 20:43:22,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:22,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586878755] [2020-10-27 20:43:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2763 [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:43:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:43:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:25,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 20:43:25,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-27 20:43:25,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 20:43:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:26,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:26,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 20:43:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 20:43:26,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:43:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:26,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 20:43:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:26,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:43:26,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:43:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:43:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:43:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:26,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:26,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586878755] [2020-10-27 20:43:26,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:26,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:26,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443934774] [2020-10-27 20:43:26,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:26,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:26,161 INFO L87 Difference]: Start difference. First operand 839 states and 1147 transitions. Second operand 14 states. [2020-10-27 20:43:26,539 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:43:26,878 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:27,170 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 20:43:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:31,295 INFO L93 Difference]: Finished difference Result 996 states and 1414 transitions. [2020-10-27 20:43:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:31,302 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-27 20:43:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:31,307 INFO L225 Difference]: With dead ends: 996 [2020-10-27 20:43:31,307 INFO L226 Difference]: Without dead ends: 969 [2020-10-27 20:43:31,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:43:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-27 20:43:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 845. [2020-10-27 20:43:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-27 20:43:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1161 transitions. [2020-10-27 20:43:31,414 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1161 transitions. Word has length 59 [2020-10-27 20:43:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:31,414 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 1161 transitions. [2020-10-27 20:43:31,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1161 transitions. [2020-10-27 20:43:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 20:43:31,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:31,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:31,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 20:43:31,418 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1943696258, now seen corresponding path program 1 times [2020-10-27 20:43:31,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:31,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561184984] [2020-10-27 20:43:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:43:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:33,709 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:43:33,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:33,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:33,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:33,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:33,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:33,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:33,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:33,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:33,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:33,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:33,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:33,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:43:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 20:43:34,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 20:43:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 20:43:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:43:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:34,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561184984] [2020-10-27 20:43:34,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:34,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:34,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87465324] [2020-10-27 20:43:34,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:34,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:34,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:34,358 INFO L87 Difference]: Start difference. First operand 845 states and 1161 transitions. Second operand 14 states. [2020-10-27 20:43:34,981 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:35,270 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 20:43:35,416 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:43:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:39,285 INFO L93 Difference]: Finished difference Result 997 states and 1415 transitions. [2020-10-27 20:43:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:43:39,285 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 20:43:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:39,290 INFO L225 Difference]: With dead ends: 997 [2020-10-27 20:43:39,290 INFO L226 Difference]: Without dead ends: 970 [2020-10-27 20:43:39,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:43:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-27 20:43:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 845. [2020-10-27 20:43:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-27 20:43:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1161 transitions. [2020-10-27 20:43:39,399 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1161 transitions. Word has length 62 [2020-10-27 20:43:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:39,399 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 1161 transitions. [2020-10-27 20:43:39,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1161 transitions. [2020-10-27 20:43:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 20:43:39,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:39,402 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] [2020-10-27 20:43:39,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 20:43:39,402 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:39,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1105047091, now seen corresponding path program 1 times [2020-10-27 20:43:39,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:39,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519604073] [2020-10-27 20:43:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1627 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:43:41,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,189 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:43:41,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:41,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:41,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 20:43:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 20:43:41,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:43:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:43:41,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 20:43:41,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 20:43:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:41,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 20:43:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:43:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:41,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:41,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:41,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:41,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519604073] [2020-10-27 20:43:41,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:41,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:41,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620256304] [2020-10-27 20:43:41,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:41,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:41,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:41,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:41,724 INFO L87 Difference]: Start difference. First operand 845 states and 1161 transitions. Second operand 14 states. [2020-10-27 20:43:42,377 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:42,673 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 20:43:42,806 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:43:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:46,733 INFO L93 Difference]: Finished difference Result 997 states and 1413 transitions. [2020-10-27 20:43:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:43:46,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 20:43:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:46,739 INFO L225 Difference]: With dead ends: 997 [2020-10-27 20:43:46,739 INFO L226 Difference]: Without dead ends: 968 [2020-10-27 20:43:46,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:43:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-27 20:43:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 845. [2020-10-27 20:43:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-27 20:43:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1158 transitions. [2020-10-27 20:43:46,871 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1158 transitions. Word has length 62 [2020-10-27 20:43:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:46,872 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 1158 transitions. [2020-10-27 20:43:46,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1158 transitions. [2020-10-27 20:43:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 20:43:46,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:46,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:46,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 20:43:46,874 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1461075255, now seen corresponding path program 1 times [2020-10-27 20:43:46,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:46,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777537356] [2020-10-27 20:43:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:47,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4274 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:43:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:51,314 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:43:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 20:43:52,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:43:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-27 20:43:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:43:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:43:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:43:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 20:43:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:43:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:43:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:43:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:52,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777537356] [2020-10-27 20:43:52,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:52,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 20:43:52,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534414582] [2020-10-27 20:43:52,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:43:52,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:52,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:43:52,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:43:52,856 INFO L87 Difference]: Start difference. First operand 845 states and 1158 transitions. Second operand 15 states. [2020-10-27 20:43:53,419 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 20:43:53,672 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 20:43:54,166 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:43:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:58,191 INFO L93 Difference]: Finished difference Result 998 states and 1413 transitions. [2020-10-27 20:43:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:58,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-27 20:43:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:58,196 INFO L225 Difference]: With dead ends: 998 [2020-10-27 20:43:58,196 INFO L226 Difference]: Without dead ends: 971 [2020-10-27 20:43:58,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:43:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-27 20:43:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 845. [2020-10-27 20:43:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-27 20:43:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1158 transitions. [2020-10-27 20:43:58,322 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1158 transitions. Word has length 64 [2020-10-27 20:43:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:58,322 INFO L481 AbstractCegarLoop]: Abstraction has 845 states and 1158 transitions. [2020-10-27 20:43:58,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:43:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1158 transitions. [2020-10-27 20:43:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 20:43:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:58,324 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] [2020-10-27 20:43:58,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 20:43:58,325 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1148008872, now seen corresponding path program 1 times [2020-10-27 20:43:58,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:58,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627336439] [2020-10-27 20:43:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 20:43:59,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-27 20:43:59,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:43:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 20:43:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 20:43:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:43:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 20:43:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 20:43:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 20:43:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 20:43:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:43:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:43:59,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:43:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:43:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:43:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:59,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:59,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627336439] [2020-10-27 20:43:59,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:59,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 20:43:59,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309270031] [2020-10-27 20:43:59,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 20:43:59,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:59,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 20:43:59,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:43:59,901 INFO L87 Difference]: Start difference. First operand 845 states and 1158 transitions. Second operand 19 states. [2020-10-27 20:44:00,399 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:44:00,789 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 20:44:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:44:06,918 INFO L93 Difference]: Finished difference Result 993 states and 1407 transitions. [2020-10-27 20:44:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 20:44:06,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-27 20:44:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:44:06,923 INFO L225 Difference]: With dead ends: 993 [2020-10-27 20:44:06,923 INFO L226 Difference]: Without dead ends: 965 [2020-10-27 20:44:06,924 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 [2020-10-27 20:44:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-27 20:44:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 843. [2020-10-27 20:44:07,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-10-27 20:44:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1145 transitions. [2020-10-27 20:44:07,030 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1145 transitions. Word has length 59 [2020-10-27 20:44:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:44:07,030 INFO L481 AbstractCegarLoop]: Abstraction has 843 states and 1145 transitions. [2020-10-27 20:44:07,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 20:44:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1145 transitions. [2020-10-27 20:44:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 20:44:07,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:44:07,033 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:44:07,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 20:44:07,033 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:44:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:44:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2046894691, now seen corresponding path program 1 times [2020-10-27 20:44:07,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:44:07,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725803432] [2020-10-27 20:44:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:44:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:44:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,181 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:44:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:44:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:44:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:44:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:44:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 20:44:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:44:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 20:44:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:44:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:44:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:12,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:44:12,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725803432] [2020-10-27 20:44:12,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:44:12,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:44:12,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13338077] [2020-10-27 20:44:12,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:44:12,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:44:12,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:44:12,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:44:12,500 INFO L87 Difference]: Start difference. First operand 843 states and 1145 transitions. Second operand 12 states. [2020-10-27 20:44:17,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:44:17,227 INFO L93 Difference]: Finished difference Result 1166 states and 1634 transitions. [2020-10-27 20:44:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:44:17,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-27 20:44:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:44:17,233 INFO L225 Difference]: With dead ends: 1166 [2020-10-27 20:44:17,233 INFO L226 Difference]: Without dead ends: 966 [2020-10-27 20:44:17,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:44:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-27 20:44:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 846. [2020-10-27 20:44:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-27 20:44:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1146 transitions. [2020-10-27 20:44:17,347 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1146 transitions. Word has length 74 [2020-10-27 20:44:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:44:17,348 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1146 transitions. [2020-10-27 20:44:17,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:44:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1146 transitions. [2020-10-27 20:44:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 20:44:17,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:44:17,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:44:17,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 20:44:17,350 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:44:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:44:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash 958136767, now seen corresponding path program 1 times [2020-10-27 20:44:17,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:44:17,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129818785] [2020-10-27 20:44:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:44:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:17,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1994 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 20:44:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,497 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 20:44:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:44:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:44:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:44:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:44:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:44:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:44:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:44:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:44:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:19,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 20:44:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:44:19,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:44:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:44:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:44:19,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129818785] [2020-10-27 20:44:19,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:44:19,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:44:19,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022616240] [2020-10-27 20:44:19,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:44:19,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:44:19,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:44:19,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:44:19,873 INFO L87 Difference]: Start difference. First operand 846 states and 1146 transitions. Second operand 12 states. [2020-10-27 20:44:20,669 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 20:44:20,929 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:44:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:44:23,851 INFO L93 Difference]: Finished difference Result 1010 states and 1408 transitions. [2020-10-27 20:44:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:44:23,852 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-27 20:44:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:44:23,855 INFO L225 Difference]: With dead ends: 1010 [2020-10-27 20:44:23,855 INFO L226 Difference]: Without dead ends: 977 [2020-10-27 20:44:23,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:44:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-10-27 20:44:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 848. [2020-10-27 20:44:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-27 20:44:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1148 transitions. [2020-10-27 20:44:23,968 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1148 transitions. Word has length 59 [2020-10-27 20:44:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:44:23,968 INFO L481 AbstractCegarLoop]: Abstraction has 848 states and 1148 transitions. [2020-10-27 20:44:23,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:44:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1148 transitions. [2020-10-27 20:44:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 20:44:23,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:44:23,970 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] [2020-10-27 20:44:23,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 20:44:23,970 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:44:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:44:23,971 INFO L82 PathProgramCache]: Analyzing trace with hash 448663677, now seen corresponding path program 1 times [2020-10-27 20:44:23,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:44:23,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850001691] [2020-10-27 20:44:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:44:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:23,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:44:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:44:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:44:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:24,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:44:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:44:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:24,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:24,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:24,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:44:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:24,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:24,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:44:24,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 20:44:24,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:44:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:44:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:44:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:25,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:44:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:44:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:44:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:44:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:44:25,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850001691] [2020-10-27 20:44:25,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:44:25,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 20:44:25,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251460363] [2020-10-27 20:44:25,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:44:25,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:44:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:44:25,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:44:25,103 INFO L87 Difference]: Start difference. First operand 848 states and 1148 transitions. Second operand 15 states. [2020-10-27 20:44:26,031 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 20:44:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:44:29,697 INFO L93 Difference]: Finished difference Result 998 states and 1395 transitions. [2020-10-27 20:44:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:44:29,698 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-27 20:44:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:44:29,703 INFO L225 Difference]: With dead ends: 998 [2020-10-27 20:44:29,703 INFO L226 Difference]: Without dead ends: 966 [2020-10-27 20:44:29,704 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 [2020-10-27 20:44:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-27 20:44:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 846. [2020-10-27 20:44:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-27 20:44:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1144 transitions. [2020-10-27 20:44:29,857 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1144 transitions. Word has length 59 [2020-10-27 20:44:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:44:29,857 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1144 transitions. [2020-10-27 20:44:29,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:44:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1144 transitions. [2020-10-27 20:44:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 20:44:29,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:44:29,859 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] [2020-10-27 20:44:29,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 20:44:29,860 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:44:29,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:44:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash 398624998, now seen corresponding path program 1 times [2020-10-27 20:44:29,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:44:29,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826675466] [2020-10-27 20:44:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:44:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 20:44:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:44:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-27 20:44:30,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:44:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:44:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 20:44:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:44:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:30,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:44:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:44:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:30,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:44:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:30,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:44:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:44:31,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:44:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:31,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 20:44:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:44:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:44:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:31,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:44:31,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826675466] [2020-10-27 20:44:31,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:44:31,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:44:31,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882370903] [2020-10-27 20:44:31,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:44:31,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:44:31,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:44:31,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:44:31,167 INFO L87 Difference]: Start difference. First operand 846 states and 1144 transitions. Second operand 11 states. [2020-10-27 20:44:31,992 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 107