/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=SHALLOWEST --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 02:02:20,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 02:02:20,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 02:02:20,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 02:02:20,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 02:02:20,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 02:02:20,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 02:02:20,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 02:02:20,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 02:02:20,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 02:02:20,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 02:02:20,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 02:02:20,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 02:02:20,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 02:02:20,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 02:02:20,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 02:02:20,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 02:02:20,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 02:02:20,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 02:02:20,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 02:02:20,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 02:02:20,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 02:02:20,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 02:02:20,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 02:02:20,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 02:02:20,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 02:02:20,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 02:02:20,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 02:02:20,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 02:02:20,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 02:02:20,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 02:02:20,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 02:02:20,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 02:02:20,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 02:02:20,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 02:02:20,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 02:02:20,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 02:02:20,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 02:02:20,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 02:02:20,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 02:02:20,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 02:02:20,693 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 02:02:20,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 02:02:20,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 02:02:20,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 02:02:20,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 02:02:20,751 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 02:02:20,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 02:02:20,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 02:02:20,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 02:02:20,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 02:02:20,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 02:02:20,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 02:02:20,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 02:02:20,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 02:02:20,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 02:02:20,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 02:02:20,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 02:02:20,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 02:02:20,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 02:02:20,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 02:02:20,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 02:02:20,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 02:02:20,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 02:02:20,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 02:02:20,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 02:02:20,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 02:02:20,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 02:02:20,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 02:02:20,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 02:02:20,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 02:02:20,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 02:02:21,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 02:02:21,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 02:02:21,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 02:02:21,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 02:02:21,266 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 02:02:21,267 INFO L432 ainManager$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 02:02:21,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94e894efb/67e072916f1b43e28f7d11e0a3dba010/FLAGa36021e4e [2020-10-27 02:02:22,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 02:02:22,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-27 02:02:22,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94e894efb/67e072916f1b43e28f7d11e0a3dba010/FLAGa36021e4e [2020-10-27 02:02:22,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94e894efb/67e072916f1b43e28f7d11e0a3dba010 [2020-10-27 02:02:22,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 02:02:22,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 02:02:22,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 02:02:22,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 02:02:22,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 02:02:22,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:02:22" (1/1) ... [2020-10-27 02:02:22,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef81e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:22, skipping insertion in model container [2020-10-27 02:02:22,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:02:22" (1/1) ... [2020-10-27 02:02:22,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 02:02:22,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 02:02:22,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 02:02:22,999 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 02:02:23,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 02:02:23,238 INFO L208 MainTranslator]: Completed translation [2020-10-27 02:02:23,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23 WrapperNode [2020-10-27 02:02:23,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 02:02:23,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 02:02:23,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 02:02:23,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 02:02:23,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (1/1) ... [2020-10-27 02:02:23,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 02:02:23,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 02:02:23,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 02:02:23,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 02:02:23,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (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 02:02:23,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 02:02:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 02:02:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 02:02:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-27 02:02:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-27 02:02:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-27 02:02:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-27 02:02:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-27 02:02:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-27 02:02:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-27 02:02:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-27 02:02:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-27 02:02:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-27 02:02:23,527 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-27 02:02:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-27 02:02:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-27 02:02:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-27 02:02:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-27 02:02:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-27 02:02:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-27 02:02:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-27 02:02:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-27 02:02:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-27 02:02:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-27 02:02:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-27 02:02:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 02:02:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 02:02:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 02:02:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 02:02:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 02:02:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 02:02:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 02:02:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-27 02:02:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-27 02:02:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-27 02:02:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-27 02:02:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-27 02:02:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-27 02:02:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-27 02:02:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-27 02:02:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-27 02:02:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-27 02:02:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-27 02:02:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-27 02:02:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-27 02:02:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-27 02:02:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-27 02:02:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-27 02:02:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-27 02:02:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-27 02:02:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-27 02:02:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-27 02:02:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-27 02:02:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-27 02:02:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-27 02:02:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-27 02:02:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-27 02:02:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-27 02:02:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 02:02:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-27 02:02:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 02:02:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 02:02:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 02:02:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 02:02:23,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 02:02:23,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 02:02:24,163 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,274 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-27 02:02:24,274 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-27 02:02:24,282 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,344 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-27 02:02:24,344 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-27 02:02:24,379 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,405 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-27 02:02:24,406 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-27 02:02:24,491 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,554 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-27 02:02:24,554 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2020-10-27 02:02:24,555 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-27 02:02:24,560 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,791 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-27 02:02:24,791 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-27 02:02:24,793 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,842 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-27 02:02:24,843 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-27 02:02:24,894 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:24,922 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-27 02:02:24,923 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-27 02:02:24,929 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:25,205 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-27 02:02:25,205 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-27 02:02:25,226 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:02:25,233 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:02:25,233 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:02:25,267 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 02:02:25,267 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 02:02:25,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:02:25 BoogieIcfgContainer [2020-10-27 02:02:25,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 02:02:25,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 02:02:25,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 02:02:25,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 02:02:25,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:02:22" (1/3) ... [2020-10-27 02:02:25,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffb40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:02:25, skipping insertion in model container [2020-10-27 02:02:25,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:02:23" (2/3) ... [2020-10-27 02:02:25,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffb40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:02:25, skipping insertion in model container [2020-10-27 02:02:25,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:02:25" (3/3) ... [2020-10-27 02:02:25,279 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2020-10-27 02:02:25,292 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 02:02:25,299 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 02:02:25,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 02:02:25,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 02:02:25,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 02:02:25,346 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 02:02:25,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 02:02:25,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 02:02:25,346 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 02:02:25,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 02:02:25,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 02:02:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2020-10-27 02:02:25,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 02:02:25,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:25,388 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 02:02:25,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 622325898, now seen corresponding path program 1 times [2020-10-27 02:02:25,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:25,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897080224] [2020-10-27 02:02:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:26,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:26,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 02:02:26,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 02:02:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-10-27 02:02:26,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:02:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 02:02:26,823 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:02:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:26,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:26,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:26,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 02:02:26,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:26,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:02:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:02:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:02:26,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897080224] [2020-10-27 02:02:26,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:26,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 02:02:26,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186317625] [2020-10-27 02:02:26,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 02:02:26,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:27,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 02:02:27,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 02:02:27,013 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 5 states. [2020-10-27 02:02:27,182 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:02:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:02:31,639 INFO L93 Difference]: Finished difference Result 1052 states and 1689 transitions. [2020-10-27 02:02:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:02:31,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 02:02:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:02:31,678 INFO L225 Difference]: With dead ends: 1052 [2020-10-27 02:02:31,678 INFO L226 Difference]: Without dead ends: 666 [2020-10-27 02:02:31,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:02:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-27 02:02:31,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 510. [2020-10-27 02:02:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-27 02:02:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 741 transitions. [2020-10-27 02:02:31,914 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 741 transitions. Word has length 21 [2020-10-27 02:02:31,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:02:31,915 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 741 transitions. [2020-10-27 02:02:31,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 02:02:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 741 transitions. [2020-10-27 02:02:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 02:02:31,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:31,918 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 02:02:31,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 02:02:31,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:31,921 INFO L82 PathProgramCache]: Analyzing trace with hash -91384539, now seen corresponding path program 1 times [2020-10-27 02:02:31,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:31,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223082525] [2020-10-27 02:02:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:32,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:32,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 02:02:32,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 02:02:32,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:02:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:02:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:02:32,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:32,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:02:32,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:32,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:32,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:32,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:02:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:02:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:02:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:02:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:02:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:32,538 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 02:02:32,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223082525] [2020-10-27 02:02:32,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:32,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:02:32,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028828896] [2020-10-27 02:02:32,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:02:32,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:32,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:02:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:02:32,549 INFO L87 Difference]: Start difference. First operand 510 states and 741 transitions. Second operand 6 states. [2020-10-27 02:02:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:02:37,684 INFO L93 Difference]: Finished difference Result 970 states and 1432 transitions. [2020-10-27 02:02:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:02:37,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 02:02:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:02:37,693 INFO L225 Difference]: With dead ends: 970 [2020-10-27 02:02:37,693 INFO L226 Difference]: Without dead ends: 848 [2020-10-27 02:02:37,695 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 02:02:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-27 02:02:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 665. [2020-10-27 02:02:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-10-27 02:02:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 965 transitions. [2020-10-27 02:02:37,793 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 965 transitions. Word has length 26 [2020-10-27 02:02:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:02:37,794 INFO L481 AbstractCegarLoop]: Abstraction has 665 states and 965 transitions. [2020-10-27 02:02:37,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:02:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 965 transitions. [2020-10-27 02:02:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 02:02:37,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:37,797 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 02:02:37,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 02:02:37,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1829358983, now seen corresponding path program 1 times [2020-10-27 02:02:37,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:37,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124007360] [2020-10-27 02:02:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 02:02:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 02:02:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:02:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:02:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 02:02:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:38,371 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:02:38,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:38,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:38,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:02:38,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:38,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:38,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:38,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:02:38,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:02:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:38,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:38,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:38,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:02:38,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:02:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:38,501 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 02:02:38,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124007360] [2020-10-27 02:02:38,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:38,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:02:38,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023873267] [2020-10-27 02:02:38,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:02:38,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:38,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:02:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:02:38,503 INFO L87 Difference]: Start difference. First operand 665 states and 965 transitions. Second operand 6 states. [2020-10-27 02:02:38,640 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:02:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:02:42,794 INFO L93 Difference]: Finished difference Result 1151 states and 1653 transitions. [2020-10-27 02:02:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:02:42,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 02:02:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:02:42,803 INFO L225 Difference]: With dead ends: 1151 [2020-10-27 02:02:42,804 INFO L226 Difference]: Without dead ends: 972 [2020-10-27 02:02:42,805 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 02:02:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-10-27 02:02:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 790. [2020-10-27 02:02:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-10-27 02:02:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1136 transitions. [2020-10-27 02:02:42,897 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1136 transitions. Word has length 31 [2020-10-27 02:02:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:02:42,898 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 1136 transitions. [2020-10-27 02:02:42,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:02:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1136 transitions. [2020-10-27 02:02:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 02:02:42,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:42,901 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 02:02:42,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 02:02:42,902 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:42,902 INFO L82 PathProgramCache]: Analyzing trace with hash 42905749, now seen corresponding path program 1 times [2020-10-27 02:02:42,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:42,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938296588] [2020-10-27 02:02:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:43,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 02:02:43,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:02:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-27 02:02:43,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:02:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:02:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 02:02:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:43,489 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:02:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:43,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:43,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:02:43,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:43,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:43,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:43,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:02:43,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:43,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:02:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:02:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:43,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:43,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:43,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:02:43,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:02:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:02:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:43,712 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 02:02:43,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938296588] [2020-10-27 02:02:43,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:43,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:02:43,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841050103] [2020-10-27 02:02:43,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:02:43,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:02:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:02:43,718 INFO L87 Difference]: Start difference. First operand 790 states and 1136 transitions. Second operand 9 states. [2020-10-27 02:02:43,881 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:02:44,224 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-27 02:02:44,466 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 02:02:45,932 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:02:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:02:48,465 INFO L93 Difference]: Finished difference Result 1628 states and 2416 transitions. [2020-10-27 02:02:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:02:48,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-27 02:02:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:02:48,476 INFO L225 Difference]: With dead ends: 1628 [2020-10-27 02:02:48,477 INFO L226 Difference]: Without dead ends: 1061 [2020-10-27 02:02:48,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:02:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-27 02:02:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 836. [2020-10-27 02:02:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-27 02:02:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-10-27 02:02:48,606 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 32 [2020-10-27 02:02:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:02:48,607 INFO L481 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-10-27 02:02:48,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:02:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-10-27 02:02:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 02:02:48,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:48,617 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 02:02:48,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 02:02:48,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:48,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:48,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1511329675, now seen corresponding path program 1 times [2020-10-27 02:02:48,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:48,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046317517] [2020-10-27 02:02:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:48,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:48,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 02:02:48,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 02:02:48,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:02:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:02:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:02:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:02:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:02:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:02:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:49,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:49,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:49,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:02:49,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:49,133 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 02:02:49,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046317517] [2020-10-27 02:02:49,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:49,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:02:49,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408913038] [2020-10-27 02:02:49,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:02:49,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:49,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:02:49,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:02:49,137 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 6 states. [2020-10-27 02:02:49,271 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:02:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:02:53,461 INFO L93 Difference]: Finished difference Result 967 states and 1427 transitions. [2020-10-27 02:02:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:02:53,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-27 02:02:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:02:53,471 INFO L225 Difference]: With dead ends: 967 [2020-10-27 02:02:53,471 INFO L226 Difference]: Without dead ends: 962 [2020-10-27 02:02:53,472 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 02:02:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-10-27 02:02:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 835. [2020-10-27 02:02:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-27 02:02:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1201 transitions. [2020-10-27 02:02:53,587 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1201 transitions. Word has length 37 [2020-10-27 02:02:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:02:53,589 INFO L481 AbstractCegarLoop]: Abstraction has 835 states and 1201 transitions. [2020-10-27 02:02:53,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:02:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1201 transitions. [2020-10-27 02:02:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 02:02:53,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:53,592 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 02:02:53,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 02:02:53,593 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:53,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:53,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1065431191, now seen corresponding path program 1 times [2020-10-27 02:02:53,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:53,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354332363] [2020-10-27 02:02:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:54,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:54,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 02:02:54,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:02:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-27 02:02:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 02:02:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:02:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:02:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:54,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:54,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:54,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:02:54,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:55,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:55,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:55,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:55,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:55,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:02:55,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:55,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:55,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:02:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:02:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:55,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:55,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:02:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:02:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:55,098 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 02:02:55,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354332363] [2020-10-27 02:02:55,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:55,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:02:55,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772203604] [2020-10-27 02:02:55,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:02:55,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:55,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:02:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:02:55,101 INFO L87 Difference]: Start difference. First operand 835 states and 1201 transitions. Second operand 6 states. [2020-10-27 02:02:55,244 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:02:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:02:59,174 INFO L93 Difference]: Finished difference Result 1234 states and 1792 transitions. [2020-10-27 02:02:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:02:59,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-27 02:02:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:02:59,184 INFO L225 Difference]: With dead ends: 1234 [2020-10-27 02:02:59,184 INFO L226 Difference]: Without dead ends: 1213 [2020-10-27 02:02:59,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:02:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-27 02:02:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1036. [2020-10-27 02:02:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-10-27 02:02:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1483 transitions. [2020-10-27 02:02:59,302 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1483 transitions. Word has length 40 [2020-10-27 02:02:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:02:59,302 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1483 transitions. [2020-10-27 02:02:59,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:02:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1483 transitions. [2020-10-27 02:02:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 02:02:59,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:02:59,306 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 02:02:59,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 02:02:59,306 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:02:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:02:59,307 INFO L82 PathProgramCache]: Analyzing trace with hash 730466694, now seen corresponding path program 1 times [2020-10-27 02:02:59,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:02:59,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913100589] [2020-10-27 02:02:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:02:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:59,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:59,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 02:02:59,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:02:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-27 02:02:59,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:59,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:02:59,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 02:02:59,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:02:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:02:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:02:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:59,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:59,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:59,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:02:59,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:59,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 25 [2020-10-27 02:02:59,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:02:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:59,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:59,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:02:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:02:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:59,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:59,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:02:59,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:02:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 02:02:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:02:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:02:59,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:02:59,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:02:59,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:02:59,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:02:59,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:02:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:02:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:02:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:02:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:02:59,947 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 02:02:59,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913100589] [2020-10-27 02:02:59,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:02:59,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 02:02:59,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805755996] [2020-10-27 02:02:59,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 02:02:59,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:02:59,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 02:02:59,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 02:02:59,952 INFO L87 Difference]: Start difference. First operand 1036 states and 1483 transitions. Second operand 7 states. [2020-10-27 02:03:00,665 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:03:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:04,971 INFO L93 Difference]: Finished difference Result 1553 states and 2219 transitions. [2020-10-27 02:03:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 02:03:04,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-27 02:03:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:04,987 INFO L225 Difference]: With dead ends: 1553 [2020-10-27 02:03:04,988 INFO L226 Difference]: Without dead ends: 1085 [2020-10-27 02:03:04,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:03:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-10-27 02:03:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 875. [2020-10-27 02:03:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-10-27 02:03:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1232 transitions. [2020-10-27 02:03:05,106 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1232 transitions. Word has length 47 [2020-10-27 02:03:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:05,106 INFO L481 AbstractCegarLoop]: Abstraction has 875 states and 1232 transitions. [2020-10-27 02:03:05,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 02:03:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1232 transitions. [2020-10-27 02:03:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 02:03:05,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:05,113 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 02:03:05,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 02:03:05,113 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:05,114 INFO L82 PathProgramCache]: Analyzing trace with hash -189999525, now seen corresponding path program 1 times [2020-10-27 02:03:05,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:05,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995402129] [2020-10-27 02:03:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:06,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:06,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 02:03:06,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:03:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-27 02:03:06,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:06,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:03:06,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 02:03:06,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:06,351 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:03:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:06,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:06,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:06,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:06,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:06,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:06,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:06,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:06,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:06,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:06,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:06,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:03:06,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:03:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:06,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 02:03:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:03:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:03:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:06,558 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 02:03:06,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995402129] [2020-10-27 02:03:06,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:06,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:03:06,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174323714] [2020-10-27 02:03:06,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:03:06,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:03:06,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:06,570 INFO L87 Difference]: Start difference. First operand 875 states and 1232 transitions. Second operand 10 states. [2020-10-27 02:03:06,722 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:03:06,913 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 02:03:07,436 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:03:09,410 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-27 02:03:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:15,670 INFO L93 Difference]: Finished difference Result 1743 states and 2560 transitions. [2020-10-27 02:03:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:03:15,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-27 02:03:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:15,682 INFO L225 Difference]: With dead ends: 1743 [2020-10-27 02:03:15,682 INFO L226 Difference]: Without dead ends: 1484 [2020-10-27 02:03:15,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-27 02:03:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-10-27 02:03:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 964. [2020-10-27 02:03:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-10-27 02:03:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1334 transitions. [2020-10-27 02:03:15,809 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1334 transitions. Word has length 48 [2020-10-27 02:03:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:15,810 INFO L481 AbstractCegarLoop]: Abstraction has 964 states and 1334 transitions. [2020-10-27 02:03:15,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:03:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1334 transitions. [2020-10-27 02:03:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 02:03:15,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:15,813 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 02:03:15,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 02:03:15,813 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2071252911, now seen corresponding path program 1 times [2020-10-27 02:03:15,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:15,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178568009] [2020-10-27 02:03:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:16,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:16,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 02:03:16,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-27 02:03:16,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:03:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:03:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:16,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:16,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:16,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:16,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:16,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:16,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:03:16,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:16,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:16,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:16,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:16,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:16,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 02:03:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:16,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:03:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:03:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:16,347 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 02:03:16,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178568009] [2020-10-27 02:03:16,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:16,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 02:03:16,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339448051] [2020-10-27 02:03:16,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 02:03:16,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:16,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 02:03:16,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 02:03:16,350 INFO L87 Difference]: Start difference. First operand 964 states and 1334 transitions. Second operand 7 states. [2020-10-27 02:03:16,483 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:03:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:20,341 INFO L93 Difference]: Finished difference Result 1232 states and 1735 transitions. [2020-10-27 02:03:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 02:03:20,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-27 02:03:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:20,350 INFO L225 Difference]: With dead ends: 1232 [2020-10-27 02:03:20,350 INFO L226 Difference]: Without dead ends: 1110 [2020-10-27 02:03:20,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-10-27 02:03:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 963. [2020-10-27 02:03:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-27 02:03:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1328 transitions. [2020-10-27 02:03:20,471 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1328 transitions. Word has length 48 [2020-10-27 02:03:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:20,472 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1328 transitions. [2020-10-27 02:03:20,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 02:03:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1328 transitions. [2020-10-27 02:03:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 02:03:20,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:20,475 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 02:03:20,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 02:03:20,475 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2018590119, now seen corresponding path program 1 times [2020-10-27 02:03:20,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:20,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371571874] [2020-10-27 02:03:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:21,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:21,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 02:03:21,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:03:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-27 02:03:21,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 02:03:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:03:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,104 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:03:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:22,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:22,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 02:03:22,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:22,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:22,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:22,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:22,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:22,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 02:03:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:22,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:03:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:03:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-27 02:03:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 02:03:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:03:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:03:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:22,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 02:03:22,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 02:03:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 02:03:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:03:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:03:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:22,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 02:03:22,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:03:22,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 02:03:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:03:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:22,696 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 02:03:22,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371571874] [2020-10-27 02:03:22,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:22,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:03:22,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808272629] [2020-10-27 02:03:22,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:03:22,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:03:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:03:22,703 INFO L87 Difference]: Start difference. First operand 963 states and 1328 transitions. Second operand 9 states. [2020-10-27 02:03:22,863 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:03:23,672 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:03:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:28,705 INFO L93 Difference]: Finished difference Result 1236 states and 1733 transitions. [2020-10-27 02:03:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 02:03:28,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-27 02:03:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:28,713 INFO L225 Difference]: With dead ends: 1236 [2020-10-27 02:03:28,713 INFO L226 Difference]: Without dead ends: 1030 [2020-10-27 02:03:28,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:03:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-10-27 02:03:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 859. [2020-10-27 02:03:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-10-27 02:03:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1182 transitions. [2020-10-27 02:03:28,821 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1182 transitions. Word has length 53 [2020-10-27 02:03:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:28,822 INFO L481 AbstractCegarLoop]: Abstraction has 859 states and 1182 transitions. [2020-10-27 02:03:28,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:03:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1182 transitions. [2020-10-27 02:03:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 02:03:28,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:28,825 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 02:03:28,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 02:03:28,825 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:28,826 INFO L82 PathProgramCache]: Analyzing trace with hash -28351854, now seen corresponding path program 1 times [2020-10-27 02:03:28,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:28,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145129412] [2020-10-27 02:03:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 02:03:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:03:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-27 02:03:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:03:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 02:03:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:30,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:03:30,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:30,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:03:30,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 02:03:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:03:30,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 02:03:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 02:03:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 02:03:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:03:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:03:30,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 02:03:30,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:03:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:03:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,628 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 02:03:30,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145129412] [2020-10-27 02:03:30,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:30,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:03:30,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176865975] [2020-10-27 02:03:30,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:03:30,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:03:30,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:03:30,631 INFO L87 Difference]: Start difference. First operand 859 states and 1182 transitions. Second operand 12 states. [2020-10-27 02:03:30,812 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 02:03:30,969 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 02:03:31,517 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-27 02:03:31,838 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:03:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:37,565 INFO L93 Difference]: Finished difference Result 1138 states and 1603 transitions. [2020-10-27 02:03:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:03:37,566 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-27 02:03:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:37,573 INFO L225 Difference]: With dead ends: 1138 [2020-10-27 02:03:37,573 INFO L226 Difference]: Without dead ends: 1078 [2020-10-27 02:03:37,574 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 02:03:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-10-27 02:03:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 879. [2020-10-27 02:03:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-27 02:03:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1218 transitions. [2020-10-27 02:03:37,693 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1218 transitions. Word has length 50 [2020-10-27 02:03:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:37,693 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 1218 transitions. [2020-10-27 02:03:37,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:03:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1218 transitions. [2020-10-27 02:03:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 02:03:37,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:37,697 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 02:03:37,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 02:03:37,697 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:37,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2017542624, now seen corresponding path program 1 times [2020-10-27 02:03:37,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:37,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125188838] [2020-10-27 02:03:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:38,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 02:03:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-27 02:03:38,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:03:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 02:03:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:38,373 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:03:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:38,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:38,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:03:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:38,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:38,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:03:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:38,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:38,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 02:03:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:38,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 02:03:38,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:38,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 02:03:38,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 02:03:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 02:03:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:38,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:03:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:38,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:38,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:03:38,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 02:03:38,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:03:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:03:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:03:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:38,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125188838] [2020-10-27 02:03:38,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:38,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:03:38,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809429707] [2020-10-27 02:03:38,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:03:38,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:38,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:03:38,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:03:38,740 INFO L87 Difference]: Start difference. First operand 879 states and 1218 transitions. Second operand 12 states. [2020-10-27 02:03:39,001 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-27 02:03:39,179 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 02:03:39,597 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 02:03:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:44,826 INFO L93 Difference]: Finished difference Result 1061 states and 1506 transitions. [2020-10-27 02:03:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:03:44,827 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-27 02:03:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:44,833 INFO L225 Difference]: With dead ends: 1061 [2020-10-27 02:03:44,834 INFO L226 Difference]: Without dead ends: 997 [2020-10-27 02:03:44,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 02:03:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-10-27 02:03:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 877. [2020-10-27 02:03:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-27 02:03:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1212 transitions. [2020-10-27 02:03:44,949 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1212 transitions. Word has length 51 [2020-10-27 02:03:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:44,950 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1212 transitions. [2020-10-27 02:03:44,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:03:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1212 transitions. [2020-10-27 02:03:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 02:03:44,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:44,953 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 02:03:44,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 02:03:44,953 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:44,954 INFO L82 PathProgramCache]: Analyzing trace with hash 581108448, now seen corresponding path program 1 times [2020-10-27 02:03:44,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:44,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048879605] [2020-10-27 02:03:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:45,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 02:03:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:03:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:45,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:45,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:45,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:45,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:45,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:45,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:45,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 02:03:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:45,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:45,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 02:03:45,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 02:03:45,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 02:03:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:45,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:03:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:45,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:45,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:03:45,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:45,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:03:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:45,382 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 02:03:45,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048879605] [2020-10-27 02:03:45,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:45,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 02:03:45,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610204417] [2020-10-27 02:03:45,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 02:03:45,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 02:03:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 02:03:45,384 INFO L87 Difference]: Start difference. First operand 877 states and 1212 transitions. Second operand 7 states. [2020-10-27 02:03:45,526 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:03:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:49,196 INFO L93 Difference]: Finished difference Result 1177 states and 1664 transitions. [2020-10-27 02:03:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 02:03:49,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-27 02:03:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:49,205 INFO L225 Difference]: With dead ends: 1177 [2020-10-27 02:03:49,205 INFO L226 Difference]: Without dead ends: 1160 [2020-10-27 02:03:49,206 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 02:03:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-10-27 02:03:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 933. [2020-10-27 02:03:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-10-27 02:03:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1272 transitions. [2020-10-27 02:03:49,331 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1272 transitions. Word has length 51 [2020-10-27 02:03:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:49,331 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1272 transitions. [2020-10-27 02:03:49,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 02:03:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1272 transitions. [2020-10-27 02:03:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 02:03:49,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:49,335 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, 1, 1] [2020-10-27 02:03:49,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 02:03:49,335 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1844724209, now seen corresponding path program 1 times [2020-10-27 02:03:49,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:49,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906106627] [2020-10-27 02:03:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:49,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:49,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:49,910 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:03:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:49,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:49,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:49,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:49,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:50,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:50,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:50,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:03:50,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:03:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:50,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:50,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:03:50,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 02:03:50,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 02:03:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:03:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:50,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:50,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 02:03:50,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 02:03:50,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 02:03:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:50,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 02:03:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:50,262 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 02:03:50,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906106627] [2020-10-27 02:03:50,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:50,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:03:50,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583738841] [2020-10-27 02:03:50,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:03:50,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:50,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:03:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:50,264 INFO L87 Difference]: Start difference. First operand 933 states and 1272 transitions. Second operand 10 states. [2020-10-27 02:03:50,628 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:03:50,827 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 02:03:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:53,806 INFO L93 Difference]: Finished difference Result 1096 states and 1534 transitions. [2020-10-27 02:03:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 02:03:53,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-27 02:03:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:53,817 INFO L225 Difference]: With dead ends: 1096 [2020-10-27 02:03:53,817 INFO L226 Difference]: Without dead ends: 1060 [2020-10-27 02:03:53,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:03:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2020-10-27 02:03:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 935. [2020-10-27 02:03:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-27 02:03:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1274 transitions. [2020-10-27 02:03:53,940 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1274 transitions. Word has length 53 [2020-10-27 02:03:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:53,941 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1274 transitions. [2020-10-27 02:03:53,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:03:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1274 transitions. [2020-10-27 02:03:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 02:03:53,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:53,944 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 02:03:53,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 02:03:53,944 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:53,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1906763823, now seen corresponding path program 1 times [2020-10-27 02:03:53,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:53,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756278514] [2020-10-27 02:03:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:03:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 02:03:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 02:03:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:03:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,272 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:03:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:54,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:03:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:54,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:54,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:54,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:03:54,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:03:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:03:54,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 02:03:54,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 02:03:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:03:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 02:03:54,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 02:03:54,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:03:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:54,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:54,574 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 02:03:54,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756278514] [2020-10-27 02:03:54,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:54,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:03:54,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149797183] [2020-10-27 02:03:54,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:03:54,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:54,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:03:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:03:54,577 INFO L87 Difference]: Start difference. First operand 935 states and 1274 transitions. Second operand 9 states. [2020-10-27 02:03:54,718 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:03:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:59,068 INFO L93 Difference]: Finished difference Result 1085 states and 1521 transitions. [2020-10-27 02:03:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 02:03:59,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-27 02:03:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:59,075 INFO L225 Difference]: With dead ends: 1085 [2020-10-27 02:03:59,075 INFO L226 Difference]: Without dead ends: 1079 [2020-10-27 02:03:59,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-10-27 02:03:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 954. [2020-10-27 02:03:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-27 02:03:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1297 transitions. [2020-10-27 02:03:59,235 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1297 transitions. Word has length 53 [2020-10-27 02:03:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:59,235 INFO L481 AbstractCegarLoop]: Abstraction has 954 states and 1297 transitions. [2020-10-27 02:03:59,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:03:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1297 transitions. [2020-10-27 02:03:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 02:03:59,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:59,239 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 02:03:59,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 02:03:59,239 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:59,240 INFO L82 PathProgramCache]: Analyzing trace with hash -885433447, now seen corresponding path program 1 times [2020-10-27 02:03:59,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:59,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788801209] [2020-10-27 02:03:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:59,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:59,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 02:03:59,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:03:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-27 02:03:59,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:03:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 02:03:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 02:03:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:00,208 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:04:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:00,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:00,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:00,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:00,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:00,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:00,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:00,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:00,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:00,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:00,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 02:04:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:04:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 02:04:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:00,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:00,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:00,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:00,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:04:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:00,402 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 02:04:00,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788801209] [2020-10-27 02:04:00,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:00,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:04:00,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257545141] [2020-10-27 02:04:00,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:04:00,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:00,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:04:00,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:04:00,404 INFO L87 Difference]: Start difference. First operand 954 states and 1297 transitions. Second operand 12 states. [2020-10-27 02:04:00,581 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:04:04,226 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 02:04:04,394 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 02:04:04,814 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 02:04:05,030 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 02:04:05,286 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:04:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:11,780 INFO L93 Difference]: Finished difference Result 2173 states and 3041 transitions. [2020-10-27 02:04:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 02:04:11,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-27 02:04:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:11,790 INFO L225 Difference]: With dead ends: 2173 [2020-10-27 02:04:11,790 INFO L226 Difference]: Without dead ends: 1937 [2020-10-27 02:04:11,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-10-27 02:04:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2020-10-27 02:04:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1528. [2020-10-27 02:04:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1528 states. [2020-10-27 02:04:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2110 transitions. [2020-10-27 02:04:12,071 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2110 transitions. Word has length 55 [2020-10-27 02:04:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:12,072 INFO L481 AbstractCegarLoop]: Abstraction has 1528 states and 2110 transitions. [2020-10-27 02:04:12,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:04:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2110 transitions. [2020-10-27 02:04:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 02:04:12,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:12,077 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 02:04:12,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 02:04:12,078 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:12,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1592142478, now seen corresponding path program 1 times [2020-10-27 02:04:12,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:12,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869005356] [2020-10-27 02:04:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 02:04:12,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 02:04:12,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 02:04:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:04:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:12,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:12,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:12,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:12,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:12,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:12,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 02:04:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:04:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 02:04:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:12,494 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 02:04:12,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869005356] [2020-10-27 02:04:12,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:12,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:04:12,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42243945] [2020-10-27 02:04:12,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:04:12,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:04:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:12,496 INFO L87 Difference]: Start difference. First operand 1528 states and 2110 transitions. Second operand 8 states. [2020-10-27 02:04:12,640 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 02:04:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:15,859 INFO L93 Difference]: Finished difference Result 2098 states and 2968 transitions. [2020-10-27 02:04:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 02:04:15,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-27 02:04:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:15,869 INFO L225 Difference]: With dead ends: 2098 [2020-10-27 02:04:15,869 INFO L226 Difference]: Without dead ends: 1683 [2020-10-27 02:04:15,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:04:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-10-27 02:04:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1516. [2020-10-27 02:04:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2020-10-27 02:04:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2091 transitions. [2020-10-27 02:04:16,119 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2091 transitions. Word has length 57 [2020-10-27 02:04:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:16,119 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2091 transitions. [2020-10-27 02:04:16,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:04:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2091 transitions. [2020-10-27 02:04:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 02:04:16,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:16,124 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 02:04:16,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 02:04:16,125 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1708586765, now seen corresponding path program 1 times [2020-10-27 02:04:16,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:16,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155108680] [2020-10-27 02:04:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:16,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 02:04:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 02:04:16,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 02:04:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 02:04:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:16,538 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:04:16,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:16,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:16,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:16,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:16,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:16,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:16,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:16,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:16,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:16,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:16,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:16,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:16,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:16,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:16,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:16,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:16,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:16,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:16,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 02:04:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:16,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:16,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 02:04:16,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:16,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 02:04:16,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 02:04:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:16,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:16,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 02:04:16,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:04:16,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:16,798 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 02:04:16,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155108680] [2020-10-27 02:04:16,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:16,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:04:16,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862572939] [2020-10-27 02:04:16,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:04:16,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:16,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:04:16,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:04:16,802 INFO L87 Difference]: Start difference. First operand 1516 states and 2091 transitions. Second operand 12 states. [2020-10-27 02:04:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:23,096 INFO L93 Difference]: Finished difference Result 1699 states and 2416 transitions. [2020-10-27 02:04:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:04:23,097 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-27 02:04:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:23,107 INFO L225 Difference]: With dead ends: 1699 [2020-10-27 02:04:23,107 INFO L226 Difference]: Without dead ends: 1694 [2020-10-27 02:04:23,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:04:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-10-27 02:04:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1523. [2020-10-27 02:04:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-10-27 02:04:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2100 transitions. [2020-10-27 02:04:23,342 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2100 transitions. Word has length 52 [2020-10-27 02:04:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:23,343 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 2100 transitions. [2020-10-27 02:04:23,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:04:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2100 transitions. [2020-10-27 02:04:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 02:04:23,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:23,348 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 02:04:23,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 02:04:23,348 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1700005035, now seen corresponding path program 1 times [2020-10-27 02:04:23,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:23,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447849626] [2020-10-27 02:04:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:23,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:23,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:24,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:24,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 02:04:24,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:04:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-27 02:04:24,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 02:04:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:24,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:24,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:24,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:24,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:24,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 02:04:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 02:04:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:24,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:24,407 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 02:04:24,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447849626] [2020-10-27 02:04:24,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:24,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:04:24,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959863829] [2020-10-27 02:04:24,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:04:24,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:24,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:04:24,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:04:24,409 INFO L87 Difference]: Start difference. First operand 1523 states and 2100 transitions. Second operand 9 states. [2020-10-27 02:04:24,582 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 02:04:26,497 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 02:04:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:29,968 INFO L93 Difference]: Finished difference Result 1705 states and 2422 transitions. [2020-10-27 02:04:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 02:04:29,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-27 02:04:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:29,979 INFO L225 Difference]: With dead ends: 1705 [2020-10-27 02:04:29,979 INFO L226 Difference]: Without dead ends: 1667 [2020-10-27 02:04:29,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:04:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-10-27 02:04:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1495. [2020-10-27 02:04:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-10-27 02:04:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2066 transitions. [2020-10-27 02:04:30,229 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2066 transitions. Word has length 52 [2020-10-27 02:04:30,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:30,229 INFO L481 AbstractCegarLoop]: Abstraction has 1495 states and 2066 transitions. [2020-10-27 02:04:30,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:04:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2066 transitions. [2020-10-27 02:04:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 02:04:30,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:30,235 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 02:04:30,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 02:04:30,235 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash -657954616, now seen corresponding path program 1 times [2020-10-27 02:04:30,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:30,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371576840] [2020-10-27 02:04:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 02:04:31,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:04:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-10-27 02:04:31,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 02:04:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,583 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:04:31,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:31,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:31,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:31,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:04:31,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 02:04:31,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 02:04:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 02:04:31,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:04:31,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:31,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,951 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 02:04:31,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371576840] [2020-10-27 02:04:31,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:31,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 02:04:31,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617976658] [2020-10-27 02:04:31,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 02:04:31,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:31,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 02:04:31,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:04:31,956 INFO L87 Difference]: Start difference. First operand 1495 states and 2066 transitions. Second operand 11 states. [2020-10-27 02:04:32,185 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 02:04:34,621 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-27 02:04:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:37,240 INFO L93 Difference]: Finished difference Result 1738 states and 2471 transitions. [2020-10-27 02:04:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:04:37,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-27 02:04:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:37,250 INFO L225 Difference]: With dead ends: 1738 [2020-10-27 02:04:37,250 INFO L226 Difference]: Without dead ends: 1731 [2020-10-27 02:04:37,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:04:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-10-27 02:04:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1492. [2020-10-27 02:04:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-10-27 02:04:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2060 transitions. [2020-10-27 02:04:37,470 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2060 transitions. Word has length 55 [2020-10-27 02:04:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:37,470 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 2060 transitions. [2020-10-27 02:04:37,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 02:04:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2060 transitions. [2020-10-27 02:04:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:04:37,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:37,476 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 02:04:37,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 02:04:37,476 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:37,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1270529651, now seen corresponding path program 1 times [2020-10-27 02:04:37,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:37,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608096909] [2020-10-27 02:04:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:37,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:04:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 02:04:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:37,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:37,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:38,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:38,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:38,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:04:38,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 02:04:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 02:04:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 02:04:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:04:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,478 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 02:04:38,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608096909] [2020-10-27 02:04:38,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:38,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 02:04:38,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524009738] [2020-10-27 02:04:38,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 02:04:38,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:38,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 02:04:38,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-27 02:04:38,480 INFO L87 Difference]: Start difference. First operand 1492 states and 2060 transitions. Second operand 15 states. [2020-10-27 02:04:39,033 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 02:04:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:44,880 INFO L93 Difference]: Finished difference Result 1685 states and 2397 transitions. [2020-10-27 02:04:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:04:44,881 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-27 02:04:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:44,891 INFO L225 Difference]: With dead ends: 1685 [2020-10-27 02:04:44,891 INFO L226 Difference]: Without dead ends: 1657 [2020-10-27 02:04:44,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:04:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2020-10-27 02:04:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1490. [2020-10-27 02:04:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-10-27 02:04:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2054 transitions. [2020-10-27 02:04:45,073 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2054 transitions. Word has length 56 [2020-10-27 02:04:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:45,073 INFO L481 AbstractCegarLoop]: Abstraction has 1490 states and 2054 transitions. [2020-10-27 02:04:45,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 02:04:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2054 transitions. [2020-10-27 02:04:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 02:04:45,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:45,078 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 02:04:45,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 02:04:45,078 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2101614674, now seen corresponding path program 1 times [2020-10-27 02:04:45,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:45,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130078316] [2020-10-27 02:04:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 02:04:45,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-27 02:04:45,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 02:04:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 02:04:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 02:04:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:45,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:45,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:45,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:45,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 02:04:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 02:04:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 02:04:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:04:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 02:04:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:04:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:45,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:04:45,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 02:04:45,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:04:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:46,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:46,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:04:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 02:04:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 02:04:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:46,058 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 02:04:46,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130078316] [2020-10-27 02:04:46,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:46,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 02:04:46,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10061318] [2020-10-27 02:04:46,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 02:04:46,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:46,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 02:04:46,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 02:04:46,061 INFO L87 Difference]: Start difference. First operand 1490 states and 2054 transitions. Second operand 15 states. [2020-10-27 02:04:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:51,415 INFO L93 Difference]: Finished difference Result 1676 states and 2381 transitions. [2020-10-27 02:04:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:04:51,419 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-27 02:04:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:51,427 INFO L225 Difference]: With dead ends: 1676 [2020-10-27 02:04:51,427 INFO L226 Difference]: Without dead ends: 1653 [2020-10-27 02:04:51,429 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 02:04:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-10-27 02:04:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1486. [2020-10-27 02:04:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-10-27 02:04:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2046 transitions. [2020-10-27 02:04:51,605 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2046 transitions. Word has length 57 [2020-10-27 02:04:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:51,606 INFO L481 AbstractCegarLoop]: Abstraction has 1486 states and 2046 transitions. [2020-10-27 02:04:51,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 02:04:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2046 transitions. [2020-10-27 02:04:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:04:51,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:51,610 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 02:04:51,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 02:04:51,611 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:51,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:51,611 INFO L82 PathProgramCache]: Analyzing trace with hash -235468011, now seen corresponding path program 1 times [2020-10-27 02:04:51,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:51,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171051245] [2020-10-27 02:04:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 02:04:51,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:51,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 02:04:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 02:04:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 02:04:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 02:04:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,134 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:04:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:52,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:52,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:52,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:52,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:52,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:52,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 02:04:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:52,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:04:52,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 02:04:52,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:04:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 02:04:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:52,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:04:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 02:04:52,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:04:52,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:04:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:52,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:04:52,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:04:52,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 02:04:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:52,549 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 02:04:52,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171051245] [2020-10-27 02:04:52,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:52,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 02:04:52,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755674947] [2020-10-27 02:04:52,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 02:04:52,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:52,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 02:04:52,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 02:04:52,552 INFO L87 Difference]: Start difference. First operand 1486 states and 2046 transitions. Second operand 15 states. [2020-10-27 02:04:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:57,728 INFO L93 Difference]: Finished difference Result 1667 states and 2368 transitions. [2020-10-27 02:04:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:04:57,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-27 02:04:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:57,735 INFO L225 Difference]: With dead ends: 1667 [2020-10-27 02:04:57,736 INFO L226 Difference]: Without dead ends: 1644 [2020-10-27 02:04:57,737 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 02:04:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-10-27 02:04:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1477. [2020-10-27 02:04:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2020-10-27 02:04:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2033 transitions. [2020-10-27 02:04:57,933 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2033 transitions. Word has length 56 [2020-10-27 02:04:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:57,933 INFO L481 AbstractCegarLoop]: Abstraction has 1477 states and 2033 transitions. [2020-10-27 02:04:57,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 02:04:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2033 transitions. [2020-10-27 02:04:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 02:04:57,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:57,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:57,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 02:04:57,939 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1189051152, now seen corresponding path program 1 times [2020-10-27 02:04:57,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:57,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076513281] [2020-10-27 02:04:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:04:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:04:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,762 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:04:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:59,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:59,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:59,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:59,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 02:05:00,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 02:05:00,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:05:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:05:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 02:05:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 02:05:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 02:05:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:00,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 02:05:00,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 02:05:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 02:05:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:00,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:00,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:00,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:00,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:00,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:00,307 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 02:05:00,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076513281] [2020-10-27 02:05:00,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:00,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:05:00,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600465718] [2020-10-27 02:05:00,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:05:00,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:00,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:05:00,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:05:00,310 INFO L87 Difference]: Start difference. First operand 1477 states and 2033 transitions. Second operand 12 states. [2020-10-27 02:05:00,882 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:01,151 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 02:05:01,274 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:05:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:04,800 INFO L93 Difference]: Finished difference Result 1680 states and 2391 transitions. [2020-10-27 02:05:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:05:04,800 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-27 02:05:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:04,807 INFO L225 Difference]: With dead ends: 1680 [2020-10-27 02:05:04,808 INFO L226 Difference]: Without dead ends: 1651 [2020-10-27 02:05:04,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:05:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-10-27 02:05:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1482. [2020-10-27 02:05:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-10-27 02:05:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2042 transitions. [2020-10-27 02:05:04,992 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2042 transitions. Word has length 63 [2020-10-27 02:05:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:04,993 INFO L481 AbstractCegarLoop]: Abstraction has 1482 states and 2042 transitions. [2020-10-27 02:05:04,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:05:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2042 transitions. [2020-10-27 02:05:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 02:05:04,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:04,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:04,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 02:05:04,998 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash -433042391, now seen corresponding path program 1 times [2020-10-27 02:05:04,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:04,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206464606] [2020-10-27 02:05:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:05:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:05:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:05:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:05:06,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 02:05:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 02:05:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:06,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:06,991 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 02:05:06,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206464606] [2020-10-27 02:05:06,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:06,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:05:06,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618799828] [2020-10-27 02:05:06,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:05:06,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:06,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:05:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:05:06,993 INFO L87 Difference]: Start difference. First operand 1482 states and 2042 transitions. Second operand 12 states. [2020-10-27 02:05:07,387 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 02:05:07,727 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:08,004 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 02:05:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:11,462 INFO L93 Difference]: Finished difference Result 1681 states and 2391 transitions. [2020-10-27 02:05:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:05:11,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-27 02:05:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:11,469 INFO L225 Difference]: With dead ends: 1681 [2020-10-27 02:05:11,469 INFO L226 Difference]: Without dead ends: 1654 [2020-10-27 02:05:11,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:05:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2020-10-27 02:05:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1483. [2020-10-27 02:05:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-10-27 02:05:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2044 transitions. [2020-10-27 02:05:11,624 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2044 transitions. Word has length 60 [2020-10-27 02:05:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:11,625 INFO L481 AbstractCegarLoop]: Abstraction has 1483 states and 2044 transitions. [2020-10-27 02:05:11,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:05:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2044 transitions. [2020-10-27 02:05:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 02:05:11,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:11,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:11,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 02:05:11,628 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:11,629 INFO L82 PathProgramCache]: Analyzing trace with hash 960730751, now seen corresponding path program 1 times [2020-10-27 02:05:11,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:11,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077304952] [2020-10-27 02:05:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:05:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:13,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:13,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:13,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:13,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 02:05:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 02:05:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:13,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:05:13,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 02:05:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 02:05:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:13,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:13,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:13,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:13,652 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 02:05:13,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077304952] [2020-10-27 02:05:13,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:13,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:05:13,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679829609] [2020-10-27 02:05:13,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:05:13,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:13,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:05:13,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:05:13,654 INFO L87 Difference]: Start difference. First operand 1483 states and 2044 transitions. Second operand 12 states. [2020-10-27 02:05:14,213 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:14,505 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 02:05:14,657 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:05:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:18,033 INFO L93 Difference]: Finished difference Result 1682 states and 2392 transitions. [2020-10-27 02:05:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:05:18,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-27 02:05:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:18,040 INFO L225 Difference]: With dead ends: 1682 [2020-10-27 02:05:18,040 INFO L226 Difference]: Without dead ends: 1655 [2020-10-27 02:05:18,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:05:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-10-27 02:05:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1483. [2020-10-27 02:05:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-10-27 02:05:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2044 transitions. [2020-10-27 02:05:18,184 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2044 transitions. Word has length 63 [2020-10-27 02:05:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:18,184 INFO L481 AbstractCegarLoop]: Abstraction has 1483 states and 2044 transitions. [2020-10-27 02:05:18,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:05:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2044 transitions. [2020-10-27 02:05:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 02:05:18,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:18,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:18,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 02:05:18,189 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:18,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:18,189 INFO L82 PathProgramCache]: Analyzing trace with hash -865534746, now seen corresponding path program 1 times [2020-10-27 02:05:18,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:18,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288001391] [2020-10-27 02:05:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:05:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,146 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:05:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:20,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:20,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:20,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:20,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 02:05:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-27 02:05:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 02:05:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:20,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:20,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:20,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 02:05:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:21,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:21,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:21,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:21,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:21,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:21,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:21,067 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 02:05:21,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288001391] [2020-10-27 02:05:21,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:21,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:05:21,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940375945] [2020-10-27 02:05:21,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:05:21,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:21,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:05:21,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:05:21,069 INFO L87 Difference]: Start difference. First operand 1483 states and 2044 transitions. Second operand 13 states. [2020-10-27 02:05:21,492 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 02:05:21,817 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 02:05:22,060 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 02:05:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:26,017 INFO L93 Difference]: Finished difference Result 1717 states and 2452 transitions. [2020-10-27 02:05:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:05:26,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-27 02:05:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:26,025 INFO L225 Difference]: With dead ends: 1717 [2020-10-27 02:05:26,025 INFO L226 Difference]: Without dead ends: 1673 [2020-10-27 02:05:26,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-27 02:05:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-10-27 02:05:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1491. [2020-10-27 02:05:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-10-27 02:05:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2060 transitions. [2020-10-27 02:05:26,230 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2060 transitions. Word has length 65 [2020-10-27 02:05:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:26,232 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2060 transitions. [2020-10-27 02:05:26,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:05:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2060 transitions. [2020-10-27 02:05:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 02:05:26,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:26,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:26,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 02:05:26,236 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1292816500, now seen corresponding path program 1 times [2020-10-27 02:05:26,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:26,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425735056] [2020-10-27 02:05:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:26,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:05:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:05:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:26,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:05:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:27,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 02:05:27,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 02:05:27,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:05:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 02:05:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 02:05:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:27,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:27,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 02:05:27,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:05:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:05:27,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:27,437 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 02:05:27,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425735056] [2020-10-27 02:05:27,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:27,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 02:05:27,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392457493] [2020-10-27 02:05:27,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 02:05:27,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 02:05:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:05:27,439 INFO L87 Difference]: Start difference. First operand 1491 states and 2060 transitions. Second operand 19 states. [2020-10-27 02:05:27,917 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:05:28,347 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 02:05:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:33,400 INFO L93 Difference]: Finished difference Result 1695 states and 2424 transitions. [2020-10-27 02:05:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 02:05:33,401 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-27 02:05:33,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:33,409 INFO L225 Difference]: With dead ends: 1695 [2020-10-27 02:05:33,409 INFO L226 Difference]: Without dead ends: 1670 [2020-10-27 02:05:33,410 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 02:05:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2020-10-27 02:05:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1489. [2020-10-27 02:05:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-27 02:05:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2055 transitions. [2020-10-27 02:05:33,585 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2055 transitions. Word has length 63 [2020-10-27 02:05:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:33,586 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 2055 transitions. [2020-10-27 02:05:33,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 02:05:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2055 transitions. [2020-10-27 02:05:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 02:05:33,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:33,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:33,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 02:05:33,590 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash -142764059, now seen corresponding path program 1 times [2020-10-27 02:05:33,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:33,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137848544] [2020-10-27 02:05:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 02:05:34,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-27 02:05:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 02:05:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:05:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:05:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,245 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:05:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:34,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:34,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:34,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:34,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:05:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 02:05:34,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 02:05:34,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:05:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 02:05:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:05:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:05:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:34,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:34,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:34,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:34,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:34,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:34,910 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 02:05:34,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137848544] [2020-10-27 02:05:34,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:34,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 02:05:34,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910007688] [2020-10-27 02:05:34,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 02:05:34,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:34,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 02:05:34,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:05:34,912 INFO L87 Difference]: Start difference. First operand 1489 states and 2055 transitions. Second operand 19 states. [2020-10-27 02:05:35,456 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 02:05:35,898 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 02:05:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:41,826 INFO L93 Difference]: Finished difference Result 1690 states and 2412 transitions. [2020-10-27 02:05:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 02:05:41,827 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-27 02:05:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:41,832 INFO L225 Difference]: With dead ends: 1690 [2020-10-27 02:05:41,832 INFO L226 Difference]: Without dead ends: 1664 [2020-10-27 02:05:41,833 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 02:05:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-10-27 02:05:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1489. [2020-10-27 02:05:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-27 02:05:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2049 transitions. [2020-10-27 02:05:42,012 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2049 transitions. Word has length 60 [2020-10-27 02:05:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:42,013 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 2049 transitions. [2020-10-27 02:05:42,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 02:05:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2049 transitions. [2020-10-27 02:05:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 02:05:42,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:42,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:42,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 02:05:42,017 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:42,018 INFO L82 PathProgramCache]: Analyzing trace with hash 331784524, now seen corresponding path program 1 times [2020-10-27 02:05:42,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:42,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196652475] [2020-10-27 02:05:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 02:05:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,348 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:05:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:42,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 02:05:42,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 02:05:42,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 02:05:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 02:05:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 02:05:42,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 02:05:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:05:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:05:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 02:05:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:42,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196652475] [2020-10-27 02:05:42,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:42,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 02:05:42,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221102387] [2020-10-27 02:05:42,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 02:05:42,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:42,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 02:05:42,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:05:42,741 INFO L87 Difference]: Start difference. First operand 1489 states and 2049 transitions. Second operand 16 states. [2020-10-27 02:05:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:48,861 INFO L93 Difference]: Finished difference Result 1685 states and 2395 transitions. [2020-10-27 02:05:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:05:48,862 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-27 02:05:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:48,868 INFO L225 Difference]: With dead ends: 1685 [2020-10-27 02:05:48,869 INFO L226 Difference]: Without dead ends: 1658 [2020-10-27 02:05:48,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:05:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-10-27 02:05:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1483. [2020-10-27 02:05:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-10-27 02:05:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2039 transitions. [2020-10-27 02:05:49,104 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2039 transitions. Word has length 59 [2020-10-27 02:05:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:49,105 INFO L481 AbstractCegarLoop]: Abstraction has 1483 states and 2039 transitions. [2020-10-27 02:05:49,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 02:05:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2039 transitions. [2020-10-27 02:05:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 02:05:49,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:49,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:49,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 02:05:49,110 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:49,110 INFO L82 PathProgramCache]: Analyzing trace with hash 723241310, now seen corresponding path program 1 times [2020-10-27 02:05:49,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:49,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136521027] [2020-10-27 02:05:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:49,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:05:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-27 02:05:49,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 02:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:05:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:49,859 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 02:05:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:49,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:49,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:49,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:49,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:49,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:49,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:49,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:49,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:49,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 02:05:50,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 02:05:50,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 02:05:50,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:05:50,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 02:05:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 02:05:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 02:05:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 02:05:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:05:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:05:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:50,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:50,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:50,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 02:05:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:50,148 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 02:05:50,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136521027] [2020-10-27 02:05:50,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:50,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:05:50,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230351554] [2020-10-27 02:05:50,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:05:50,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:05:50,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:05:50,150 INFO L87 Difference]: Start difference. First operand 1483 states and 2039 transitions. Second operand 10 states. [2020-10-27 02:05:50,788 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 02:05:51,035 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:53,712 INFO L93 Difference]: Finished difference Result 1702 states and 2414 transitions. [2020-10-27 02:05:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:05:53,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-10-27 02:05:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:53,720 INFO L225 Difference]: With dead ends: 1702 [2020-10-27 02:05:53,720 INFO L226 Difference]: Without dead ends: 1669 [2020-10-27 02:05:53,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:05:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-10-27 02:05:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1485. [2020-10-27 02:05:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-10-27 02:05:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2041 transitions. [2020-10-27 02:05:53,958 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2041 transitions. Word has length 60 [2020-10-27 02:05:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:53,959 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2041 transitions. [2020-10-27 02:05:53,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:05:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2041 transitions. [2020-10-27 02:05:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 02:05:53,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:53,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:53,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 02:05:53,963 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:53,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2093925986, now seen corresponding path program 1 times [2020-10-27 02:05:53,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:53,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840825794] [2020-10-27 02:05:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 02:05:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 02:05:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0